2008 – NOAA Teacher at Sea Blog

November 16, 2008December 27, 2021

Dave Grant, November 16, 2008

NOAA Teacher at Sea
Dave Grant
Onboard NOAA Ship Ronald H. Brown
November 6 – December 3, 2008

Mission: VOCALS, an international field experiment designed to better understand the physical and chemical processes of oceanic climate systems
Geographical area of cruise: Southeast Pacific
Date: November 16, 2008

Weather Data from the Bridge
Sunrise: 10:16 UTC Sunset: 23:16 UTC
Wind: AM Slight; PM Slight
Seas: 4’
Precipitation: 0.0
Pressure: 1015

Science and Technology Log

Flotsam and Jetsam “Never bring anything onto a boat that you can’t afford to lose.” (Nancy Church – Cape Cod Museum of Natural History)

Except for the anchor, there are very few items that go overboard intentionally on a ship. A hat blown off your head by the wind becomes flotsam, but something deliberately discarded is jetsam. ARGO is the international program that deploys and monitors a global network of autonomous floats that monitor ocean conditions (“Taking the pulse of the oceans.”). The buoys are deployed from a variety of vessels and one of the main advantages is that a vessel does not have to slow down or stop to launch them. Because of this, a vessel dedicated to research is not required, and commercial and even cruise ships have participated in this world-ocean study.

Drifters have been distributed since 1999 and continuously monitor temperature, salinity and currents. They will provide a global network spread out on a 3º by 3º ocean grid (180-miles by 180miles). Data transmitted automatically to satellites is broadcast to the Global Drifter Program and available continuously to researchers.

Teachers and students also are involved through the Adopt-a-Drifter Program and we deployed drifters marked with decals from two schools partnered through it: Universite Nancy (France) and Grandview Elementary School – Grades K, 1, 2, 3, 4, 5. Drifters actively transmit data for over a year, but like anything in the sea, can become the home for bio-fouling organisms that can interfere with their operation. We deployed several of them. The simplest are blue-andwhite basket ball-sized floats with a drogue (a large sock-like bag) that acts as a sea anchor or drift sock so that the movement of the drifter is by current, not wind. Once in the water, the packing materials dissolve, the drogue sinks to about 15 meters, and the currents, satellites, scientists and students do the rest. All researchers have to do to explore the oceans is log-on to the drifter website with a computer.

“After the sea-ship, after the whistling winds… Toward that whirling current, laughing and buoyant, with curves… (After the Sea-Ship – Walt Whitman)

Other larger drifters are shipped in sturdy but degradable cardboard cartons. These too are launched off the stern and the shipping boxes rapidly fall apart after the water dissolves the glue. They are rather mysterious since we did not actually see what they look like, but I’ve seen others in the repair shop at WHOI (Woods Hole Oceanographic Institution). They are tube-shaped and designed to automatically sink to as deep as 1000-meters, and then rise periodically to broadcast their data. What a wonderful journey they will have to share with the world when they start reporting their data in dark and stormy seas and on sunny days. Falling away astern of us, floating high and looking coffin-like, I was reminded of Queequeg’s casket and some of the most memorable lines from Moby Dick: “These are times of dreamy solitude, when beholding the tranquil beauty and brilliancy of the ocean’s skin; one forgets the tiger heart that pants beneath it…”

Personal Log

We have had a great string of days. I have settled into an interesting work routine with helpful and interesting scientists and crew. Weather balloons and sondes are released every four hours and the readouts from their fights are very informative. Along with the evening lectures, the week has been like a short semester on meteorology. Hourly water sampling has gone well too, and we are learning more about these peculiar eddies of warm and cold water each day.

My roommate (RW) is very nice and accommodating, and since we work different hours and find the best way to relax is with headphones and a book, the room does not seem crowded at all. There are a few items I am glad I brought, and I suggest they be added to the TAS list: coveralls, ski cap, knee pads and eye drops. The coveralls are great for cool mornings on deck and to quickly pull on for the weekly “abandon ship” drills, since you are required to report to your muster station in long pants and sleeves, and with a hat. My light-weight volleyball knee-pads are good if I have to kneel on the metal deck for a while to take pictures. And eye drops are a relief since we do get wind almost every day, and some very bright days since we are headed into the Austral Summer, and the sun’s position is moving south every day.

I have been checking my Almanac, and perhaps as early as tomorrow, our course will cross paths with the sun’s southern movement, and it will be directly overhead at Noon. This can only occur at locations in the “Tropics” (Between the Tropic of Cancer and Tropic of Capricorn) and I have heard sailors refer to it as a “Lahaina Noon.” This term comes from the old sailing days when whalers made port stops at Lahaina on Maui. When it occurs there, fence posts, and for that matter, people, do not cast a shadow. Hopefully the clouds will clear around midday and we will be able to see the phenomenon.

“Thus drifting afar to the dim-vaulted caves Where life and it ventures are laid, The dreamers who gaze while we battle the waves May see us in sunshine and shade.” (Sun and Shadow by Oliver Wendell Holmes – 1857)

November 13, 2008April 5, 2021

Dave Grant, November 13, 2008

NOAA Teacher at Sea
Dave Grant
Onboard NOAA Ship Ronald H. Brown
November 6 – December 3, 2008

Weather Data from the Bridge
Wind: AM Calm; PM 5kts
Seas: 5’
Precipitation: 0.0
Pressure: 1016

Science and Technology Log

Big whirls have little whirls That feed on their velocity, And little whirls have lesser whirls And so on to viscosity. (L.F. Richardson)

This little imitation of Jonathon Swift’s ditty helps illustrate the parallels between the atmosphere and ocean. Just as in the atmosphere, but much slower because of the increased density, turbulence in the water is expressed by meandering currents, and vortices. Good examples of this are observable when an oar is dipped into the water to push a boat, or a spoon is drawn across a bowl of soup. One of the mysteries of the SEP (South East Pacific) region is the presence of large oceanic vortices (Eddies), the mechanisms that generate them, and the length of time they persist as identifiable entities slowly spinning in the surrounding waters.

In a number of coastal areas fishermen and oceanographers have discovered that some important fish species can be found associated with these so-called mesoscale water structures, like upwelling areas, meandering currents and eddies. Such links are fairly well known and heavily exploited in the vicinity of the boundary currents off eastern North America (Gulf Stream), California (California Current) and Japan (Kuroshio Current); for tuna, swordfish, sardines and anchovies. The coast of Peru and Chile is swept by the northward flowing Humboldt (Peru-Chile) Current and the area is famous for the upwelling that brings deep, cold, nutrient-rich water to the surface (and every 5-7 years when it doesn’t, El Nino conditions). Exposed to sunlight, phytoplankton utilize the nutrients to form the base of the world’s largest industrial fishery for fish meal and oil. The area also supports a large commercial tuna fishery.

Poorly understood is the role of eddies that spin off the major current; vortices averaging about 50-Km (30-miles) wide (i.e. mesoscale). These may be either cold or warm water eddies that may last offshore for months, and move as discrete masses to the west. In general these vortices have more energy that the surrounding waters, circulate faster; and are important because they transport heat, masses of water and nutrients to less productive regions towards the mid-ocean. The eddies also transport marine life and the mechanisms for this are also poorly understood, however the outcome is not. Moored buoys out here collect and support masses of fouling organisms like goose-neck barnacles that must be cleaned off periodically, along with other routine maintenance of the batteries and recording instruments. Servicing these buoys is also part of the mission of the Ron Brown.

Chasing “Eddy”

Tracking these “cyclones in the sea” requires interpreting daily satellite images that measure water temperature and by data collected by the UCTD (Underway Conductivity Temperature Depth) probe. This is a torpedo-shaped device cast off the stern of the Brown while we are underway. It rapidly sinks to several hundred meters. Then, like a big, expensive ($15,000.) fishing lure, it is retrieved with an electric motor that winds back over 600 meters of line. The whole process takes about 20-minutes (including the 2minute plunge of the UCTD).

The information acquired is phenomenal, and if collected any other way, would involve stopping the ship and repeatedly lowering Niskin or Nansen bottles; and adding weeks or months to a cruise schedule. Once back onboard the ship, the data is downloaded and plotted to give us a continuous picture of the upper layers of the ocean along our sailing route. All of this hourly data allows the tracing of water currents. The procedure is not without trials and tribulations. Lines can tangle or break, and there is always the possibility that the probe will bump into something – or something will bump into it down in the deep, dark ocean. However, any data retrieved is invaluable to our studies, and each cast produces a wealth of information.

Personal Log

Today’s weather is fabulous. Most mornings are heavily overcast, but we are still close enough to the coast to enjoy breaks in the clouds. So, everyone is taking their breaks in folding chairs on the foredeck at “Steel Beach” since we are never certain when we’ll again have a sunny moment, or how long it will last.

After lunch there was a bit of excitement; we saw other mariners. In the old days of sailing, ships passing each other at sea would often stop to exchange greetings, information and mail. This practice was known as gamming. We sighted our first ship of the cruise; a cargo carrier heading north and piled high with shipping containers. It was too far off for gamming or even waving (The scientists who are sampling air want to keep their instruments free of exhaust from any nearby sources) so it would have been out of the question anyway. The bridge gave it a wide berth; so wide that even with binoculars I could not be certain of the ship’s flag, name or registry, other than oversize lettering on containers that spelled JUDPER. Presumably it was carrying agricultural goods from southern Chile or manufactured goods and minerals from the central part of the country. Chile is a major exporter of copper; and the smelters, factories and vehicles in this upscale corner of South America (And the sulfur and particulate matter they spew into the sky) are a interesting land signatures for the atmospheric scientists and their delicate instruments. So the only gamming today is in the narrow passageways throughout the Brown. There is no wasted space on a ship, so in many areas there is “barely enough room to swing a cat.” (The cat being the cat-o-nine-tails once used to flog sailors. “The cat is out of the bag” when someone is to be punished.*)

I am still not certain what the proper ship’s etiquette is in passageways and stairways, but I am quick to relinquish the right-of-way to anyone who is carrying something, looks like they are in a hurry or on a mission, or in uniform (obviously) or kitchen staff in particular. Because the ship is always rocking, I’ve found that I tend to lean against the right wall while moving about. By lightly supporting myself leaning with a hand, elbow or shoulder (depending on the how significant the ship is rolling, pitching or yawing) I slide along the wall, and probably look like a clumsy puppy scampering down the hall, but it works…except for a few bruises here and there. Often I come face-to-face with the same shipmates repetitively during the day. (How many times a day can you say “Hello” to someone?) Everyone is polite and considerate, especially when moving about the ship, and in spite of repeatedly passing the same people many times every day. So generally, since everyone is busy for most of their shift, when meeting in the hallways, you resort to awkward routines like: muttered Hey, Hi, Yo or What’s-up; tipping your hat or a dumb half-salute; or a nod…or if from New England, what is known as the reverse nod.

*Flogging: There was a science to this horrible practice, not only with the number of lashes imposed, but what they were administered with: a colt (a single whip) or a cat (They varied in size from “king size” to “boy’s cats”).

Although the U.S. admirals reported that “it would be utterly impossible to have an efficient Navy without this form of punishment” Congress abolished flogging on July 17, 1862. And the last official British Navy flogging was in 1882 – although the captain’s authority remained on the books until 1949. (To politely paraphrase Winston Churchill, the British Navy was bound together by…*#@#&!, rum and the lash.)

One Final Note

We discovered stowaways onboard…two cattle egrets. Egrets are wading birds that feed in shallow ponds and marshy areas; and the cattle egret regularly feed along roadsides and upland fields where cattle or tractors stir up insects. Even when threatened, they tend to fly only short distances, so it is odd to see them so far from land. However, in the 1950’s a small flock of these African birds crossed the South Atlantic to Brazil and establish a breeding colony. I remember spotting them for the first time on the Mexican border near Yuma in the 1970’s and today they have managed to thrive and spread all the way across the warmer half of North America.

Of ships sailing the seas, each with its special flag or ship-signal,
Of unnamed heroes in the ships – of waves spreading and spreading
As far as the eye can reach,
Of dashing spray, and the winds piping and blowing,
And out of these a chant for the sailors of all nations…
(Song for All Seas, All Ships – Walt Whitman)

November 12, 2008April 5, 2021

Dave Grant, November 12, 2008

NOAA Teacher at Sea
Dave Grant
Onboard NOAA Ship Ronald H. Brown
November 6 – December 3, 2008

Weather Data from the Bridge
Sunrise: 07:12 Sunset: 20:11
Wind: S-SW 8-10 Kts
Seas: S-SW 8-10’
Precipitation: 0.0
Temperature: 18º-C
Pressure: 1015 Mb

Science and Technology Log

“Send them our latitude and longitude.”
Admiral William Halsey, 1944 (Response to an intercepted Japanese radio message: “Where is the American fleet?)

Now that we are out of sight of land and the ocean is featureless except for the waves, so pinpoint navigation becomes crucial. Using the most modern navigation tool – GPS (Global Positioning Satellite system) our navigation officer has put us precisely where we need be to await over-flights from aircraft sampling the atmosphere above us. We are not just near our sampling station – not a mile, a minute, a knot, or a league – we are within a hairsbreadth* of it. We will be here for the day taking water and air measurements, while waiting for the only things we’ll see flying over the Pacific besides birds and balloons; our last connection to the land for several weeks.

“Thanks for the memories.”

The ocean water we test has a memory for the weather and climate conditions today and over the last several months and years. The “code” we need to understand these secrets is hidden in the temperature and salinity of the water, and the keys to unlock them are a number of devices that sink, float and drift. Over the next few weeks we will use all these techniques to see what stories the water has to share. My first introduction to this remote sampling and sensing was a long-necked beverage bottle with a weight, retrieval line, and a cork that could be popped with a string. (And of course, duct tape to hold it all together.) Using it in the local pond and discovering that there were indeed differences between the surface and bottom temperatures was enough to pique my curiosity to move on to bigger things in college. This involved more sophisticated devices, typically named after the oceanographers that perfected them: Secchi, Nansen, Eckmann, Peterson and Niskin. All students of science and oceanography should study these pioneers and their struggles and achievements, but perhaps the foremost is Fridtjof Nansen (1861-1930)…arctic explorer, distinguished scientist and Nobel Laureate.

The Nansen bottle has been a standard water collection device since 1910 and when lowered by a strong line, can be signaled to close with a weighted “messenger” sent down the line to “fire” off a release mechanism that closes off a tube of water from any depth. The only limitation is the length of your line. Then that water can be brought to the surface for analysis of its physical features, nutrients and even contaminants washed into the sea or wafted from land. In 1966 Shale Niskin perfected a version of the bottle that today we will lower with eleven others on a circular frame called a rosette. These Niskin bottles can be signaled automatically to capture water at preprogrammed depths as the CTD device on the bottom of the frame records data. The CTD (Conductivity, Temperature, Depth) is one of today’s most important oceanographic tools. It is mounted on the rosette with the Niskin bottles and records the temperature and salinity of the layers of water, which allows oceanographers to trace the origins of the currents. The Brown has enough cable to lower it to 6,000 meters, but here in the Peru Basin, we are limited to less than 4,000 (Still deep enough to swallow any mountain east of the Mississippi, and most of the ones in the west.)

The crew does an amazing job holding the Brown on station, and can literally turn on a dime since the ship has fore and aft thrusters. When the seas are high and it is choppy, they maneuver into position by making a slow (right) turn to starboard (Where the rosette is deployed) so it is in the lee of the wind and much calmer. The turning creates a “pond” of flat water that also attracts seabirds, so I try to have my camera ready at all times. The whole process takes several hours and has to be done with great care and constant adjustments from the bridge since anything lowered over the side might become tangled with the rudder or propellers, its own cable, or otherwise be damaged or lost. The water brought up from depth in the Niskin bottle is collected for chemical analysis, salinity, dissolved oxygen and plankton samples. Nutrient bottles are quickly frozen for later analysis in the lab, plankton is preserved for identification under the microscope, and dissolved oxygen must be chemically tested immediately; so there is always a flurry of activity when the CTD finally is retrieved and in deck. Water on the surface is 18º and drops to 5º near the bottom. Salinity ranges between about 35.25 ppt on the surface and as low as 34.5 ppt at depth.

Personal Log

There has been a good roll to the ship about every 10 seconds since we left port and after a few days your body anticipates it and I only notice the movement when I see water in a basin or the shower floor sloshing with it, or when something that is not secured bangs around. This movement approximates the wave period of the largest swells and they are generated by the constant winds drawn towards the Equator – the Trade Winds which merchant sailing vessels could always rely upon. In 1520, these same winds pushed Magellan northwest after crossing into the waters to our south that he called El Pacifico. When on deck, I have noticed a low and longer period swell from the west, which is a clue that there is some far off storm brewing. Or perhaps, since the Pacific is so wide, that like the light from distant stars, it has gone through its entire existence, dissipated, and its energy is just reaching us now…only a faint remembrance in the sea.

I’ll take note of things over the next few days and look for changes like the Polynesians did when watching for storms. Higher, shorter period swells indicate that the storm is approaching. This gives you time to prepare for the large, short period, wind-driven seas that challenge ships and sailors.

“Look not to leeward for fine weather.” J. Heywood, 1546

This sailor’s expression helps illustrate the fact that because winds are generated by the pressure gradient between high and low air masses, tacking into the wind moves you closer to fairer weather than running with it. (In actuality, the high pressure, and hopefully fair weather, is about 90º to the pressure gradient.) That doesn’t always explain waves however. Wave size is determined by wind speed, duration and fetch (the distance over which the wind blows), and over the broad expanse of the Pacific, there can be many storms and wind patterns creating waves simultaneously.

Before physicists and meteorologists fined-tuned the mathematics, sailors had their own theories about waves. One observation was that the size of seas (waves in a storm) could be estimated by the wind speed…a storm with 60-knot winds might produce 60-foot waves. People tend to overestimate wave size, especially when at sea, and the theoretical height is probably only about 80% of that figure (Still a very sizable and terrifying mass of water if you are in the midst of it!).

“Now would I give a thousand furlongs of sea for an acre of barren ground.” Shakespeare – The Tempest.

Another difficult aspect of wave behavior is estimating the velocity and distance between waves (wave period); and here we turn to the oceanographers and their experimental wave tanks. To try to understand waves at sea, it is much simpler to generate perfect swells in a controlled environment. Although wave behavior in a storm is chaotic and almost impossible to monitor accurately, there is good data on the swells that spread out from the fetch, and for that we turn to the ship’s “Bowditch.” (Nathanial Bowditch’s – American Practical Navigator).

So the 10 second swells rocking the ship are traveling at a speed of about 30-knots, and have a wavelength of over 500-feet; which means, among other things, smooth sailing for the Brown (and most of her passengers). I’ll continue to watch for signs of change and hopefully our fine weather will continue.

November 11, 2008April 5, 2021

Dave Grant, November 11, 2008

NOAA Teacher at Sea
Dave Grant
Onboard NOAA Ship Ronald H. Brown
November 6 – December 3, 2008

Science and Technology Log

The ship was cheered, the harbor cleared, Merrily did we drop, Below the kirk, below the hill, Below the lighthouse top – Coleridge

Finally, it is time to cast off. For days the scuttlebutt has kept us guessing about what has been holding up the cruise. It is approaching Midnight and dock workers have suddenly arrived, crew is adjusting lines and has flushed the birds, and new sounds and rumbling from the engine room are emanating through the deck. I am half asleep, lying in my bunk, and starting to hear announcements from the bridge that remind me of HAIKU: All stations report. Testing bow thrusters. Visitors must leave the ship. Cast off lines.

The Ron Brown has come to life! Leaving port is complicated since even the most experienced captain is usually in strange waters. For this reason, a local ship’s pilot is taken onboard to guide us. Thoreau wrote about the pilots off of Cape Cod in the 1800’s and describes how after lookouts spotted a vessel, pilots would race their sailboats to claim the fee for guiding the ship safely to port. Our pilot boarded with great fanfare and salutations from the deck hands. Even though it was calm, it can be dangerous transferring between vessels. Once aboard, he headed to the bridge to take over the wheel.

Hands-on training started immediately. Our first task was to use a sonde to take radio soundings of the atmosphere above the ship. Radiosondes are lifted by balloons and as they rise, broadcast atmospheric pressure, temperature and humidity data to the ground station. (In this case the lab on the ship.) This allows atmospheric scientists to record a slice of the air up through the cloud levels through most of the troposphere, where our weather is generated. Radiosondes can also be modified to conduct ozone and radioactivity soundings for pollution studies, but the emphasis of the VOCALS research is the marine layer and its interaction (linkage) between the ocean and atmosphere. Here in the Southeast Pacific, away from continents and major cities, the air should be some of the least polluted on the planet.

Radar reflectors and parachute accessories are available too, but not needed out here since recovery is not an option. Once the balloon reaches low enough air pressure, it expands too much and bursts, and the unit falls into the ocean. (Now, before you start worrying about sea turtles swallowing balloons and meteorologists littering the ocean…this was my first question, and I was told that these materials deteriorate rapidly once they are removed from the hermetically sealed foil containers.)

Many students will state that observing weather and collecting data was the “hook” that got them interested in science; and that certainly applies to me too. As an elementary student helping Mr. Giffin and Mr. “Z” set up mercury column barometers, and seeing 16mm movies of “real scientists” launching weather balloons, really piqued my curiosity. And here I am, so many years later, sending up my own balloons – and for that matter, launching them off a ship in the middle of the ocean!

The science of radiosondes has been around since before WWII and is fairly straight forward. First, read the SAFETY INSTRUCTIONS FOR BALLOON OPERATORS:

Do not use in an area with power lines or overhead obstructions.
Do not use without consultation and cooperation with aviation authorities. (We will not see any air traffic here, except the scheduled flyovers from VOCALS research aircraft.)
Use extreme caution if generating hydrogen gas. (No problem. We use helium; but I did have a flashback of our grandmother Hinemon’s tale about witnessing the Hindenburg explosion from the family farm near Lakehurst, NJ.)
The balloon film is only 0.05 mm thick upon launch, so ensure that there are no sharp or pointed objects nearby. (That seems pretty obvious now, doesn’t it Homer Simpson?)
And finally, the Dennis the Menace clause: It is not advisable to deflate the balloon if it is leaking. Instead, release the balloon without a load.

Balloon with message that says, “Thanks TAS!”

The units we send aloft are made in Sweden and have a small GPS omni-directional receiving antenna that looks like an eggbeater; a 9-inch wire broadcast antenna; and a thin metal sensor “boom” for temperature and humidity. Power is supplied by a curious little low voltage battery that is activated when soaked in water for a few minutes while the sonde is calibrated by the radio receiver and computer. There are a dozen steps to remember for a successful flight. First the unit is unpacked from its shipping container. Then it is checked to confirm it is functioning and calibrated to the local conditions of temperature, pressure and humidity; as well as the current latitude and longitude. Fortunately the ship monitors these conditions continuously, so you just have to punch in the numbers prior to release. There is a science to filling the balloons. Too much Helium and it rises too fast for the sensors to record good information. Too little Helium and it may hit the water and malfunction. (You don’t get any second chances!)

Once the balloon is filled, and any messages you wish to photograph are attached to it, clearance is requested from the bridge by letting the duty officer know you will be on the “lee side of the stern” to launch it. Just like when you are seasick…this keeps things blowing away from the boat, instead of in your face. I thought I was clever putting our college logo and president’s name on one, until I saw the Great Pumpkin – a well-decorated balloon that made it to a whopping 23,464 meters on Halloween! (Not to be outdone next time, I am working secretly at night on a Thanksgiving turkey design.) The wind has been remarkably gentle most days, but with the ship rocking and steaming ahead constantly, handling a large balloon while zigzagging across deck between equipment and storage boxes can be challenging, especially in the dark. Sounding balloons are sent up every four hours, so the work is shared by everyone. There is a friendly competition to see whose makes it the highest and gets the best data.

Note the details in the above image of data from a sounding balloon. Air PRESSURE (Green line) decreases to 25.7 hPa and the balloon finally bursts. The unit then plunges back to the ocean and pressure increases back to “normal” sea level values. HUMIDITY (Blue line) shows three (3) peaks (About 95%, 75%, and 15%. The highest humidity is at sea level and when the sensor reaches cloud level. The next sharp peak is moisture moving south from the ITCZ (Meteorological Equator). The small, wide peak is probably Cirrus clouds that were seen earlier before the lower Stratus clouds moved in to block our view. TEMPERATURE (Red line) decreases with height and humidity until the sonde reaches the Tropopause, then begins to rise where higher intensity UV light adds heat. At the top of the image, all three lines merge as the sonde plunges back to sea level.

From the flow of data while this remarkable little instrument is aloft, we can study the decreases in temperature and pressure, and the changes in humidity from sea level to the moment the balloon reaches the bottom of the clouds. An hour or two later, the computer screen even shows the poignant moment (For the launch person, at least), and the decent rate when the balloon bursts and falls back to Earth.

Directional data of balloon winds: Tracking of the sonde shows the direction is drifting in relation to the ship. — Tracking of the sonde shows drifting in relation to the ship.

GPS tracking of the sonde is accomplished with at least four ($) satellites

I’ve looked at clouds from both sides now, From up and down and still somehow, It’s cloud’s illusions I recall, I really don’t know clouds at all. – Joni Mitchell

Personal Log

I have the best cabin on the ship! Below us is the freshwater tank – the Brown produces over 4,000 gallons of freshwater every day (About 30% more than is needed) and the sloshing of all that water each time we rock not only drowns out the noise of the ship, but it sounds to me like I’m right on the surface of the water. Falling asleep, I dream that I’m Thor Heyerdahl on Kon-Tiki!

As soon as we hit the open sea you could see some people getting uncomfortable, but as always, “Doc” was on top of it dispensing sea-sickness tablets and in a very few cases, injections. Within a day everyone was moving about and within two days even the dizziest landlubber was up for duty and at every meal. There are few things worse than mal de mer. In part because, as the fishermen like to say, you can’t buy the boat from the captain once you are out there. Years ago on a long and stormy cruise to Madiera, I was issued an experimental device that was part of a NASA trial to treat motion sickness. It was a CD player with headphones that were flat plates fitted behind your ears, which sent out random vibrations to “reset” your middle ear. It reminded me of one of those hearing tests you got in grade school, and seemed to help. However, when I quizzed the ship’s surgeon Dr. Bob (Ex-marine, Vietnam-era Army helicopter pilot, emergency room specialist; trainee in NASA’s early space program, humanitarian and great storyteller) about how his gadget works, he only shrugged his shoulders and replied, “We haven’t a clue.”

As it turns out, even NASA doesn’t understand why 80% of us get motion sickness at some point in our lives; but current research is pointing away from the traditional disoriented “middle ear” hypothesis. Over the years I have had success with my own remedies, including: acupressure, ginger cubes, Coca-Cola (Not a commercial endorsement) and as a last resort, over-the-counter remedies with Meclizine. They seem to do the trick, but this night as we sail west to Point Alpha, all I needed to put myself to sleep was Richard Rodger’s soothing tango from the US Navy’s classic WWII Victory At Sea documentary – Beneath the Southern Cross.

“The sea language is not soon learned, much less understood, being only proper to him that has served his apprenticeship.” (Sir William Monson’s “Naval Tracts”)

Words to check today:

Source information

From Dave Grant’s collection of stories:

The world’s worst tale of seasickness? As told by Ulysses S. Grant in his Memoirs

One amusing circumstance occurred while we were lying at anchor in Panama Bay.

In the regiment there was a Lieutenant Slaughter who was very liable to seasickness. It almost made him sick to see the wave of a table-cloth when the servants were spreading it.

Soon after his graduation [from West Point] Slaughter was ordered to California and took passage by a sailing vessel going around Cape Horn. The vessel was seven months making the voyage, and Slaughter was sick every moment of the time, never more so than while lying at anchor after reaching his place of destination.

On landing in California he found orders that had come by way of the Isthmus [Panama], notifying him of a mistake in his assignment; he should have been ordered to the northern lakes.

He started back by the Isthmus route and was sick all the way. But when he arrived back East he was again ordered to California, this time definitely, and at this date was making his third trip. He was sick as ever, and had been so for more than a month while lying at anchor in the bay.

I remember him well, seated with his elbows on the table in front of him, his chin between his hands, and looking the picture of despair.

At last he broke out, “I wish I had taken my father’s advice; he wanted me to go into the navy; if I had done so, I should not have had to go to sea so much.”

Poor Slaughter! It was his last sea voyage. He was killed by Indians in Oregon.

November 10, 2008April 5, 2021

Dave Grant, November 10, 2008

NOAA Teacher at Sea
Dave Grant
Onboard NOAA Ship Ronald H. Brown
November 6 – December 3, 2008

Science and Technology Log

“Ships and sailors rot at port.” – Captain Horatio Nelson

Today is a bit frustrating for the science staff since we are delayed in our departure; although the crew doesn’t object to another day of restaurant meals and visits to town to make final purchases.

This gave the science and navigation team time to get up to speed on the cruise track, and view satellite images of what is happening offshore, and to determine the first waypoint of the ship – Point “Alpha.” Alpha is at -20° S, 075 W (That will put us 130-miles southwest of Arica, 1200-miles south of the Equator, and in 4,000-meters of water.) We will be at the same Longitude as Philadelphia, PA. Surface and subsurface sampling of the sea and air is to be done at the same time air samples are captured by several aircraft passing overhead at different altitudes. Low passes by a slow-flying US Navy Twin Otter will take samples at the “boundary layer” where particles of salt spray and other particles are cast into the air by wave action; while higher passes are made by a much larger C-130 operated by the National Center for Atmospheric Research.

Simultaneously, meteorologists on the ship will be launching SONDES (Weather Sounding Balloons) that collect data on the air temperature, humidity and air pressure up to about 25,000 meters; and oceanographers will be taking water samples with a CTD meter (Conductivity, Temperature, Density) at the surface and down to 3,000-meters.

Rules and Regulations!

“You’ll never get in trouble following orders.” Commander Tom Kramer – US Navy

Safety

“One hand for the ship and one hand for yourself.” Onboard, the 3-Point Rule is in effect. Even at dock the ship can move, so you should always have three points of contact. (Two feet and at least one hand on a railing.) “Only YOU can prevent…!” Fire, not drowning, is the biggest hazard on a ship. Smoking is only permitted in the designated area outside the ship and at the stern.

“If it’s too hot, stay out of the kitchen!” This is an open ship, but for obvious safety reasons and to avoid interfering with operations, certain places like the engine room, machine shop and galley are generally off-limits. Inform the bridge of your activities and always wear your safety vest and helmet while on the fantail.

Health

“Wash your hands!” Living in close quarters requires good hygiene. Wash frequently since you are constantly touching doors and railings. Immediately report any injuries to the health officer “Doc.” Know the signs of seasickness and immediately seek attention if you feel dizzy, nauseous or groggy. Stay hydrated.

Courtesy

“Can you hear me now?” We were reminded that we will be working where people live (the crew), and to observe others’ privacy whenever possible. Earplugs were on our list of Items to bring and one quickly learns that there is always inherent mechanical noise on a ship in addition to any work sounds. Since the ship is metal, any vibrations from the constant scraping, grinding and chipping of rust by the maintenance crew can often be heard reverberating through several decks to the sleeping quarters; sounding like your worst nightmare about visits to the dentist. (And they start work early, and work late!)

Meals

The Galley staff serves dessert -sweet potato pie!

“Eat it and beat it!” To paraphrase that old Army saying, a ship sails on its stomach too, and the first order of the day was food, meal times and consideration of the galley staff. Meals are closely spaced and on a tight schedule because of rotating schedules (Someone on the ship has to be maintaining power, scientific equipment and our course every minute.). Also, the kitchen is in a constant state of clean-up and prep for the next meal, which means the small staff must start at “0-Dark-Thirty” hours (Well before dawn) and is not finished until evening. Mealtime is not the time for chit-chat. Eat and make room for others who are coming off duty. Many WWII veterans admit that their motivation for joining the Navy was to be assured of warm chow. (And a dry bunk instead of a foxhole!) Regardless of your culinary tastes and dietary needs, they are met at every meal on this ship. The cuisine…in a word? Excellent! For those who are tardy, sleep late, like to spread out their meals, or are delayed because of a sampling conflict or problem in the lab; the cooks are always considerate enough to leave out fruit, soup, leftovers, world-class dessert (On the rare event that any is left) and predictably, the old standby – peanut butter and jelly.

Emergencies

Abandon ship drill - Fitting survival suits — Abandon ship drill – Fitting survival suits

“This is a Drill!” The earsplitting ship’s bell keeps everyone aware of any serious problems. There are three signals you must respond to without hesitation: “HEL-LO Gumby” Everyone has seen or used a life jacket, but the Brown’s bright orange ones are specially designed equipment with the ship’s name on the back, reflector tape, an oversized whistle, and a strobe-light that is activated automatically when it comes in contact with the water. Since they are fairly thick, they also make good windbreakers when you are on deck; so there is little excuse not to wear them. Survival suits are oversized orange neoprene “dry” suits like the ones divers wear. Putting them on during our weekly drills is quite and adventure for the first time, but this is serious business and we are all checked out by the Safety Officer. And yes, you do look like the cartoon character, especially when you are walking in your “Jumbo Immersion Suit.”

“The two-man rule” Any doctor will tell you that nothing is better for allergies than an ocean cruise, and the air here between the desert and sea is very refreshing. However, in the confines of the ship we must be aware of gases like Nitrogen and Helium that the scientists need to operate analytical equipment, and since the ship has large and powerful engines, Carbon Monoxide is always a consideration. When working with these gases and in tight quarters, we were reminded to have a partner, while the Safety Officer trained us on the 10-minute rescue breathers in our cabins.

Interesting observation: One sign that odorless, suffocating gases are present is that someone passes out while you are talking to them. (Certainly THAT is every teacher’s worst nightmare!). We are also issued an EEBD (Emergency Evacuation Breathing Device) which would give us 10 minutes of air to escape such a situation. Feeling informed, safe and secure, we were given one very important final tip from the maintenance crew: “Please don’t flush anything down the head besides toilet paper and whatever your last meal was!” We are ready to go to sea.

Emergency breathing device - Demonstration by safety Officer — Emergency breathing device – Demonstration by safety Officer

Personal Log

There may be miles of cordage on a ship: Line (Thin rope), Rope (Thick rope more than 1-3/4 inches in circumference) and hawser (Really thick rope at least 5-inches in circumference). Hawsers are used to secure and tow the largest ships. As many as ten bow, stern, breast and spring lines, ropes and hawsers secure a vessel to the wharf.

Returning to the Brown after a long day hiking around and hoping to see some unusual wildlife during our last hours of “shore leave” I noticed the gang plank was moving back-and-forth appreciably, even though the harbor was flat calm. At the beach I enjoyed watching thunderous “overhead” surf breaking on the point and speculated about what sea conditions would be like at our rescheduled Midnight departure. Back in the harbor, the circular, movement of the ship was confirmation that there was a good long period swell refracting around the breakwater and setting the port’s water in motion. Watching the ship’s lines tighten and slacken at regular intervals of about a minute, I imagined the Brown was telling us she was biting at the bit to sail! Checking the lines I realized the hawsers had become a perfect roost for Inca terns; a bird I had searched for in vain at the shore – hoping to spot at least one before the end of my trip. The Inca tern (Larosterna inca) is the most distinctive of this gregarious group of seabirds. Rare elsewhere, it is fairly common along the coasts of Chile and Ecuador…and becoming increasingly abundant on the Brown! At night they outnumber every other bird in the port.

Brown at dock with birds gathering on lines

Birds of a feather flock together and this is certainly the case with terns. They roost, breed and fish in groups, often made up of different, but similar-looking, mostly grey and white species. Identifying them can be a challenge; except in the case of the dark grey Inca tern. Its red bill and especially its whiskered facial plumes separate it from its cousins, and all seabirds. Terns are my favorite group of birds and they have a cat-like aloofness when it comes to tolerating people. Sailing home from fishing trips in New Jersey waters, I usually have plenty of bait left over (Testimony to my questionable fish-finding ability.) and I soon learned that our common and least terns in Sandy Hook Bay are happy to dive down and perform fantastic midair catches of the bait I toss off the stern. These sharp-eyed hunters never seem to miss, and for me this is often the best part of the trip.

I thoroughly enjoyed my night with the whiskered terns, photographing them and watching their behavior. The birds were most crowded on the thick hawsers at the bow and stern. (Unlike perching birds like robins, most seabirds are flat-footed and can’t grip a perch.) There are two lines at each end of the ship (An inner and outer) and they behave differently – the outer lines stretching more but less gracefully, and occasionally shuttering. Also, the inner lines were better lit by the harbor lights than the outer lines. What follows is some of my data-driven research on the topic of Inca terns: It appears that some subtle differences encourage a definite hierarchy in the arrangement of the birds on the lines. Between 7075% of the group were adults (with their fancy plumes and dark coloration), however they were not distributed randomly. Almost all of the birds on the inner lines were always adults, and the juveniles (brown, “clean-shaven” and with less colorful bills) were banished to the outer lines. I monitored them for many hours and the whole group regularly would take off, even if only a few were disturbed (A typical tern behavior sometimes called “panic flights.”). They would circle out over the harbor, squawk a bit, and then return to sort themselves out at the lines. Adults would always jockey for space and replace any younger birds settled in the prime locations by hovering over them and making a few squawks and stabs with their bill. I never saw juveniles dislodge adults.

I also noticed some courtship behavior with the terns. This involves catching a small fish and offering it to your prospective bride; and since it only occurred between adults, I assume that like the gulls at the beach, they were approaching their breeding season too. At one point before it was too dark, a large gull wandered across the parking lot and was immediately dive-bombed and chased away (More typical tern behavior near colonies). There may even have been birds on eggs inside the few select hollow openings in the wharf’s walls, since individual birds stationed themselves at the dark entrances, defending them from others that tried to land there. Hmmm…Are Inca terns cavity nesters…cliff nesters…beach nesters? There is so much to learn about Inca terns….So many birds, so little time!

November 10, 2008April 5, 2021

Dave Grant, November 8-10, 2008

NOAA Teacher at Sea
Dave Grant
Onboard NOAA Ship Ronald H. Brown
November 6 – December 3, 2008

From the top of El Morro, NOAA Teacher at Sea, Dave Grant, points to the Ron Brown anchored offshore.

Science and Technology Log

Chile is due south of Portland, Maine; and Santiago, its capital, largest city and main gateway for international visitors is about 5235 miles from my home in New Jersey (By my crude flight calculations). Sometimes called the London of South America, it is as modern and upscale as some US cities. Chile is huge and diverse; it’s more than half the length of South America and bigger than Texas. Its 2666-mile (4300-Km) coastline stretches from the sub-tropical areas and deserts in the north, across the Tropic of Capricorn (The southernmost point where the sun reaches the Winter Solstice), through agriculturally important Mediterranean and Temperate climates at its middle, to the frigid tip of the continent at Tierra del Fuego.

Chileans are friendly, good natured and known for their hospitality towards visitors. Although the population is described as mestizo (A mixture of European and indigenous bloodlines) Aymara Indians in the North and Mapuche Indians in the South still follow many of their traditional ways of working the land. After a short stay in Santiago, another 1,040 miles and two flights up the coast put us in the port of Arica, the capital of northern Chile, where we were to meet the NOAA Ship Ronald H. Brown.

Arica is squeezed between the nearly rainless Atacama Desert of Peru, one of the driest places on Earth, and one the widest and island-free portions of the South Pacific. It is a week’s sail to “westernmost” Chile, Easter Island in the southwest; the home of the giant Moai statues and the most remote population of Polynesians. Arica is known as La Ciudad de la eternal primavera -“The city of the eternal spring” and is a busy but pleasant commercial center; the export/import hub for the region. Arriving before the ship’s departure allowed time for two worthwhile endeavors: sitting in on meetings with scientists who were reviewing their projects and exploring this fascinating part of the world. Over 50 researchers and technicians met at the Hotel Arica, on the shore just south of the city. Discussed in detail were various aspects of VOCALS (VAMOS Ocean Cloud Atmosphere Land Study). VAMOS refers to Variability of the American Monsoon Systems – the seasonal changes of wind patterns. Atmospheric scientists presented overviews on large scale wind movements, rain and cloud-forming particles (nuclei) in the air.

Oceanographers discussed the movement of rings (50-mile wide cores or eddies of circulating water bodies) in the main study area designated ORS* – the Stratus Ocean Reference Station – a curious region hundreds of miles off of Chile with persistent stratocumulus cloud cover. Satellite images, radar, air samples taken by various aircraft and balloons, and water samples brought to the surface from hundreds of meters below are analyzed to study this expanse to better understand the interaction between the ocean and atmosphere, as well as influences on climate. Meteorologists sometimes tease their colleagues that oceanography is a small aspect of weather science. The atmosphere and ocean are linked by exchanges of energy, and the currency for this interaction is water vapor. Major mechanisms for energy transfer in the ocean are exhibited by great water currents – “Rivers in the sea” as Mathew Maury described them – like the Gulf Stream of North America, and the Humboldt (or Peru) Current off of the western coast of South America.

Personal Log

Since the ship was not fully loaded, the galley closed and much of the crew on shore-leave, we were free to explore the town’s small shops and restaurants at its center. My first stop is always the outdoor markets to see what is being raised and caught locally, and there are some interesting choices here besides fishes, including: muselina, cangrejo, limpa, percebe. (Mussels, rock crabs, limpets and barnacles.) Then, after enjoying a meal of this interesting nugget that I couldn’t help copying verbatim from the local menu…Pastel de jabus en su greda (“Cake baked carb whit cheese in his clay pot”)…it was off to explore the shore.

There are small pocket beaches here with ghost crab burrows; and I found a nice assortment of bivalves and univalves for my collection. There were also many empty squid egg cases that were as thin and white as tissue paper. In spite of the cool waters (60’s), children don’t hesitate jumping in the waves or sitting in the tide pools gouged in the rocks. These pools are a perfect spot for the budding marine biologist to study or play, and are filled with barnacles, pretty striped snails, and kelp. In the larger ones, small fish stranded by the tides dart for cover when they see your shadow; and other residents – little dark blennies, that match the color of the rocks and probably spend their lives in these havens, safe from bigger predators.

Barnacles and a drill snail in a tidepool

Higher up the tideline where the wash of the waves – the life support of the littoral zone – diminishes, barnacles disappear and the main residents are durable little snails grazing on algae, and enduring harsher conditions of temperature and salinity that other creatures cannot. William Beebe wrote of his little periwinkle…”when a race of creatures develops an ability to clothe itself in impregnable marble palaces, immune to a host of dangers which threatens less armoured brethren, there is little need of their changing to meet new conditions.” The uppermost depressions in the rocks collect salt spray or ocean water during the spring tides which quickly turns to brine in the dry air and afternoon sunshine. I find the coast here reminiscent of Southern California in many ways. Sturdy foot gear is in order since much of the coast is either eroding cliffs or rocky wave washed marine terrace. This is the realm of rugged creatures like limpets, snails and barnacles that must hold or cement themselves to the rock face. It is also the haunt of the colorful Sally Lightfoot, a lively semi-terrestrial crab that darts into crevices as soon as it sees you move, or in anticipation of the next wave – whichever comes first.

Picking at whatever morsels they can catch among the rocks are groups of ruddy turnstones; tall, stately and wary curlews; and noisy and very nervous black oystercatchers. The oystercatchers have a loud squeak-toy call and announce their presence regularly to intruders like me and each other, so although discrete, they are easy to find. Grey gulls (Larus modestus) live up to their Latin name only when it comes to appearance. Since this is the Autumnal spring, hundreds of them put on a continuous and raucous show along the shore, calling to each other in courtship pursuits, or in pursuit of any working fishing boat that passes. Some birds like the striking band-tailed gull habituate to people and are common around the docks and anywhere fishermen are cutting up their catch. Others, like the Peruvian booby, fly away whenever you approach them. The boobies and their cousins the cormorants, are responsible for the guano cliffs south of Arica, and a short trip to the end of the coast road brings you to a path that leads along the white-washed precipice through a series of caves.

The presence of seabirds is a clue to the productivity of ocean waters, and the legendary abundance of boobies, cormorants, pelicans and gulls (and their guano) along this coast and especially across the border, confirms it. The guano islands of Peru that were mined for their rich fertilizer, harbor the world’s largest colony of seabirds, some 10 million strong. The upwelling of nutrient-rich deep waters here helps produce perhaps one fifth of the world’s annual fish catch. By lunchtime the camanchaca (coastal fog) cleared “as it always does” and I negotiated a history and cultural tour with a very agreeable taxi driver named Federico. In spite of my poor knowledge of Spanish, he was able to make it a very educational afternoon. First stop was inland to the Azapa valley and the Museo Arqueologico which specializes in cultural artifacts from the various groups that inhabited this harsh environment from the 7^th Century BC until the Spanish “invasion” and colonial period. The earliest inhabitants fished and hunted fur seals and sea lions, and must have struggled constantly with their environment because of the lack of water and building materials. However they did leave behind evidence of their accomplishments: tools like fish hooks fashioned from cactus spines, weaved materials and most significantly (to the archaeologists) cementerios with clay-covered mummies – said to be the oldest in the world. Three are exhibited: a man, woman and child.

They also invented and left behind their own brand of graffiti on the barren hills – Geoglyphs. By arranging dark stones on the light dusty hillsides, they created large and highly visible outlines of people and animals, especially llamas. South of Arica is the Giant of the Andes – said to be the largest in existence. I was told these images are a type of ancient trailside billboard, which would have guided pack trains. Climbing up one steep hill to line up a photograph of a very distant condor geoglyph, I stumbled and fell flat on my back – much to the delight of Federico and a friendly dog hoping for a treat from picnickers. I wonder how long my dust angel, The Gringo of the Andes(?) will remain here, untouched by wind and rain.

On our way back to town we passed many farms where drip irrigation allows the cultivation of hedgerows of tomatoes, and of course, corn. Olives are an important crop too and the trees that the Spanish introduced are some of the largest and oldest plants in the valley. I made a mental note to pick up some of the local products to bring home to New Jersey as gifts: Aceitede Olivia (Olive oil) and a delicious Mango Chutney. In town we visited the restored 1874 customs house (Aduana) which, to my surprise, was designed by none other than Alexandre Gustave Eiffel. Besides designing the support structures for his famous tower in Paris and the Statue of Liberty, he is responsible for a number of buildings and bridges here in South America.

Looming over the city and harbor is El Morro. At 330 meters it offers an incomparable vista of the entire area, including a birds-eye view of surfers and windsurfers taking advantage of the consistent southeasterly breeze and swell. Birds are in constant motion too, benefiting from the updraft on the steep cliff and circling it effortlessly. Vultures are the most common, and I made eye contact with a large red-tailed hawk soaring directly in front of us. At one point three falcons of different sizes were engaged in aerial combat, diving upon each other and then wheeling high above; the smallest being the noisiest and most aggressive; perhaps defending an eyrie below us. After a glorious sunset over the sea, the wind died down “as it always does” and the cool layer of marine air moved inland. Once it was dark, the park downtown erupted in music at several locations, including what I would describe as a head-banger concert that was loud enough to cause me to retreat back to the hotel to instead be sung to sleep (as the poets say) by the mewing of the nearby gladness of gulls.

*(ORS refers to a Woods Hole Oceanographic Institution (WHOI) buoy moored at 20º South/85º West, in the center of a vast region of cloud cover in the South East Pacific (SEP). Similar cloud regions occur off of the coasts of West Africa, California, the Western Atlantic and Western Australia, but this one is the largest and most important in modifying weather.)

October 16, 2008March 18, 2021

Jacob Tanenbaum, October 16, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 16, 2008

Science Log

This bird came by for a visit. I think is a type of hawk or a falcon. Can anyone identify it for me? We have been trying but can’t seem to figure out what kid of hawk this is. In any case, it stopped by and perched on the bow just out of the blue when we were about 80 miles from shore. I wonder how it got here? Was it blown out to sea by a storm? Did it follow a ship looking for food? Is it lost? I hope it finds its way back.

It was foggy during the early morning and the ship had to blow its fog horn. I found out that ships use a code when they sail. One long blast means we are steaming ahead. One long and two short blasts means we have equipment such as nets in the water and cannot manuver as quickly. Listen by clicking here.

We found more spoon armed octopi. Can you see that one of the arms has a little spoon like object at the end? The male has an arm shaped like a spoon. Can you see it in this picture?

This baby skate has a yolk sack still attached to it. The baby uses the yolk as food while it grows. Usually this happens in the skate case. I wonder what happened with this little guy.

This is a red gold-bordered sea star. Isn't it amazing how many different kinds of sea stars there are in the ocean! — This is a red gold-bordered sea star. Isn’t it amazing how many different kinds of sea stars there are in the ocean!

This is a shrimp close up. Can you guess what the blue mass is under her back end? Post your answers to the blog.

A sea anemone. This opens up and tenticles appear. They wave their tenticles in the water to collect food. When fish like Nemo, the clown fish, go into a sea anomone, it will sting the fish, so the clown fish backs in which helps it tolerate the sting.

Here is an interesting story: We were approaching a station where we were expecting to take a sample from the water with our nets. Do you see the note in the chart that says “Unexploded Ordinance?” (you can click on the chart to make it bigger). that means there are bombs from an old ship that may still be active! We decided to move our trawl to a nearby area. When we did, look what came up in the nets! Part of an old ship! The coordinates are Latitude: 42°27’23.65″N and Longitude: 68°51’59.12″E. Here is that location on Google Earth. What could have happened way out here? CLE students, tell me the story of that wreck. Be creative. Please print them out and leave them for me on Monday. Make them fun to read. I am bringing back what came up in the net for you to see. When I get back, we will see if we can do some research and find out what really happened!

Now lets meet Phil Politis, our Chief Scientist on board the Bigelow. I asked him to tell us about his job. Here is what he said:

The main job of a chief scientists is to meet the goals and objectives of the the scientific mission. In our case, that is, to pair up with the ship Albatross in as many stations as possible, following their route. My day to day job is to coordinate with the officers, and crew, setting the nets properly, make sure that the samples are processed properly and solving problems as they arise. Say we have an issue with the nets. It is the chief scientists job to decide what to do next. I can accept the tow, code it as a problem, or re-do the tow. I have to look at each issue individually. If we tear on the bottom, will it happen again? Is there time to re-tow? I also coordinate with the other vessel.

My title is fisheries biologist, but I am a specialist in the nets. My background is in trawl standardization. We have to ensure that our nets are constructed, maintained and that we fish same way each time. Small changes in nets can effect how the nets fish and that effects the study. That way we can compare this years catch to next years catch. Remember, this study is called a time series. Over time, you can see changes to fish population. The only way you can trust those numbers is if the nets are the same each time we put them in the water year after year, tow after tow. We have to document what we are doing now so that in the future, people know how and what we were doing. This way the time series remains standard. We have to standardize materials the nets are made of, way they are repaired. We inspect the nets each time we come on here. We train the deck crews in the maintenance and repair of our nets.

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In answer to many of your questions, I will be back to SOCSD on Monday. I’ll be in WOS on Monday and CLE on Tuesday. See you then.

Mrs. Christie-Blick’s Class:

You asked some AMAZING questions. I’m so proud of you guys. Drl Kunkel was impressed as well. Here is what He told me:

You asked: What is your proof that these lobster shells are softer than other lobster shells? How do you measure hardness:

We have an engineering department at U Mass and one of the projects they have to do to become materials engineers is to test for hardness and they do an indentation test. Another way is to shoot x rays at shell and we can tell how hard it is by how the x rays scatter.

You asked: What is causing the harmful bacteria in the water?

We don’t know if they are harmful bacteria. My theory is that it could be the same normal bacteria that are on the backs of healthy lobsters. We think it is the weakness in the new lobster shells because of environmental influences south of Cape Cod that causes the trouble.

You asked: Can you get rid of the harmful bacteria?

It is possible to reverse the environmental conditions that have been created by us or by mother nature.

You are right about these sources of pollution. Good thinking. And yes, Dr. Kunkel believes that one or more of these factors may be hurting the lobsters. The problem area is south of Cape Cod. Look on a map today and count the number of cities between New York and Boston. Is this an area with a lot of people and pollution or is this an area that is sparsely populated?How would you expect this area to compare to areas where the lobster population is healthier off of Maine and Nova Scotia? Do the problem areas for the lobster and the pollution occur in the same area? If they match, scientists say there is a correlation between the two and they wonder if one is causing the other. What do you think?

Hag fish did gross me out a little. Interestingly, there is no way to determine the age of this fish as there are with others, so I’m not sure we can even tell you how long they live.

Several of you asked about the red dots on the lobster. They are a disease. It is called shell disease.

The lobster on the right is healthy. I just love this picture so I thought I would share it.

SR, the water temperature is about 16 degrees C last time I checked.

MF, nice to meet you. It is really cool to be a Teacher At Sea.

DTR, my favorite thing about this trip is working with you guys from the middle of the ocean.

MR, Snuggy and Zee are having loads of fun touring the ship.

CF: I will try to count the teeth of a fish and tell you what I find. Sometimes they are hard to see. I do not know if I am going back next year, but I hope so. I like being at sea. The truth is, I like being on land too. Both are nice. Thanks for writing.

BS: No, we find mostly adults, but some babies. Many creatures are small as adults.

BV: We have seen lots of jellyfish. We had so many we had to hose down the lab at the end of our session the other day. They were everywhere.

GS: We will continue to take samples here.

TL and Many Others asked how long we put the cups down for: We put the cups down for about 15 minutes. That includes the time it takes to lower the CTD to the bottom. When it gets to the bottom, it comes right back up. Thanks all for writing.

AS: Right you are!

Good job calculating all those who got 984 feet!

MM, I love the adventures I’m having here and the people I am meeting. It has been fun. I like being on land too.

JS, Dr. Kunkel took samples from some lobsters so he could help cure the disease.

KF: Could the hag fish bit us? Yes, Mel Underwood, our Watch Chief was very careful as she held the bag and backed her hands up when the fish got close to her hands. Mel is very experienced working with sea life and I have never seen her back off the way she did with this thing.

HRF: Go for it! It is a cool job!

CF: Good question. No, your bones are a lot stronger than styrofoam, so you would have to go down many miles to hurt yourself, and you could not swim that far without gear. When divers get hurt from pressure changes, it is usually something different called the bends. This happens when you are swim up to fast and certain gases in your blood stream expand as the pressure increases and form bubbles that can hurt you. Divers have to swim up slowly (the usual rule is don’t go up faster than the air bubbles next to you) in order to avoid getting the bends.

DC: Good questions: The dots are not bacteria on the lobster, they are the result of the bacteria eating away parts of the shell. The actual bacteria are too small to see. Good question about he temperature relating to growth. It is a bit more complex than that. There are many factors at work. The factor that may be causing more bacteria are chemicals like fertilizers from land getting into the water.

Dr. Kunkel came on board to study lobsters. He is a biologist, not a medical doctor. There are many scientists on board working with us, and me with them.

The quadrent is an old invention. People have been able to find their way with the stars for thousands of years. It is an ancient art. It was fun to practice it here.

SF, VF and others: The fish stayed in the bag. We made sure of that. From the bag, we put it back in the sea.

SD, sorry, I can’t help you there. I don’t think a pet skate would survive the trip back to NY.

Several of you have asked if I have gotten sick. No, I have not.

How many lobsters have we caught so far? Lots!

SS, sleeping on a boat if fun. If the waves are small, they rock you to sleep. If they are huge, however, they throw you out of bed!’

CP: bacteria infect the shells of the lobsters. This destroys the protection that the lobster should have. They grow weak and die of other causes. Good question!

Why do we work at night? Because ships work 24 hours a day so that no time is wasted. I ended up on the night shift. Why do we wear suits? To stay warm and dry on deck.

The hagfish eat shrimp and small fish, though they are scavengers and can eat large creatures as well.

Mrs. Christie Blick’s Class, you guys are doing some great work. I check on the skates for you. Some skates have protection, like thorns or spikes. They also have some interesting fins that look almost like feet. They use these to “walk” along the bottom searching for food. I know you asked about skates, but I have to mention the ray I worked with yesterday. It is related to the skate and could shock with an electrical charge for both protection and for hunting prey. Cool!

October 15, 2008March 18, 2021

Jacob Tanenbaum, October 15, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 15, 2008

Science Log

Our study of creatures on the bottom of the sea has been done every year for 45 years. In fact, it is the longest series of data for fish, in the world. Why is this important? I asked Dr. Michael Fogarty, head of the Ecosystems Assessment Program, at the Northeast Fisheries Sciences Center in Woods Hole, MA.

Mr. T: This is the longest uninterrupted time series of a trawl survey anywhere in the world. Is that important?

Dr. Fogarty: Really important because the changes that we are observing occur over long periods of time due to fishing and climate and other factors, so we need to track these changes to see how individual fish species are doing and to see how the ecosystem itself is responding to these changes.

Mr. T: What have you found?

We have found overall in the 45 years that we have been doing this survey, the number of fish has remained the same, but the types of fish have changed. In Georges bank, we would have mostly cod, flounder in the past, now we have small sharks, skates, which are relative of the rays.

Mr. T: What does that mean in terms of the ecosystem?

Dr. Fogarty: It has changed the entire food web because, for example, these small sharks we are seeing are ferocious predators. Because these dog-fish prey on other species, they keep the fish we usually like to eat down in number

Mr. T: Why is that happening?

Dr. Fogarty: Our hypotheseis is that because the some fish have been hurt by too much fishing, the other fish have come in to take their place.

I thought about that for a while. It means this ecosystem has been effected by something called Overfishing and something called climate change. I started wondering about all the different factors that might have effected the environment we are studying. There are so many! Let’s look at some of the may things that human beings have done that have changed this ecosystem in the 45 years we have been doing this study. Dr. Fogarty and I talked about this and then we created talked about this mini website for you. Click each problem area to learn more.

Remember the other day when I tried to use a sextant to fix our position? I could not even get close, so today, I took a lesson with one of the NOAA Corps officers on board, Lieutenant Junior Grade Andrew Seaman. Click here to come along.

Elsewhere on the ship, Snuggy and Zee paid a visit to the dive locker on the ship. This is the area on the ship where SCUBA gear is stored. We are not using SCUBA on this trip, but it was fun to visit the locker and see all the gear. Snuggy and Zee learned that the crew can actually fill up the air bottles they need right on the ship. They have all the equipment they need to do work underwater right here on the ship.

We had a fire drill yesterday. I know you are all familiar with fire drills, because we have them at school. When we do them at school, we often practice evacuating the building and calling the fire department. Well, at sea, things work a little differently. We have to get away from danger, but then, we have to practice putting out the fire as well. After all, there is no fire department to call way out here! Click here for a video.

Finally, so many of you asked about dangerous creatures that we have caught. This torpedo ray does have an electrical charge to it. The ray can zap you if you are not careful. I used rubber gloves to keep from getting hurt. The hardest part was holding the thing while we took the picture. I kept dropping it becuase it was so slimy!

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AT: I have not been frightened by anything on the ship or in the sea that we have seen. The hag-fish did seem gross. Very gross. Other than that, no.

Hi SP, I enjoy Korean food very much and have eaten lots of crab roe. It does not gross me out at all. Thanks for writing.

NV, Zee and Snuggy are just fine. Thanks for asking.

Mrs. B’s Class: I’m glad you liked the blog. We found the dead whale 100 miles or so off of Cape Cod. There are no sea snakes here. The water is too cold. I’m kind of glad about that!

Hello Mrs. Graham’s Class. I am staying nice and warm. Even working on deck, it is not too cold. We could stay out for several more weeks without a problem. Do you know what we use to make electricity? See if you can figure that out. We have to go back to port before we run out of that.

Mrs. Christie Blick’s Class: Very interesting. Our chief Scientists says that they can tell the whales don’t like barnicles because whales without them don’t behave in quite the same way.
This particular fish, which we call a monk fish or a goose fish has all the adaptations you mentioned. You did very well thinking those up. The Chief Scientist, Phil Politis and I are both impressed. He says that the fish hides in the mud (that is why it is brown), which keeps it hidden from predators. It has another adaptation, the illicium which we are calling a fishing rod. This adaptation lures smaller fish to the monkfish. Since it does not move around as much as many other fish, it can stay safer from predators.

Hello to Mrs. Coughlin’s Class, Mrs. Berubi’s Class. I’m glad you like the blog.

NN, I’ll be back next week. Because the crew and I, as well as a few birds are the only land-creatures we have seen out this far! Thanks for writing.

Hi Jennnifer. Thanks for your kind words and thanks for checking in on the blog.

October 14, 2008March 18, 2021

Jacob Tanenbaum, October 14, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 14 2008

Here is Doctor Kunkel collecting samples with Watch Chief Mel Underwood.

Science Log

Dr. Joseph Kunkel from the University of Massachusetts at Amherst is investigating a mystery on board our ship. In the last few years, fisherman and biologists have all noticed that lobsters are disappearing from waters south of cape cod near shore. This includes Narragansett Bay and our own Long Island Sound. Why? Thats’ what Dr. Kunkel is trying to find out.

He and other scientists have found that the lobsters are infected with a bacteria. Dr. Kunkel has a hypothesis. He believes that some lobsters get the bacteria because their shells are not as strong as other lobsters and don’t protect them as well. He is here collecting samples to test his hypothesis.

He has even made a discovery. He and another scientist, named Dr. Jercinovic, discovered that this shell fish actually has boney material in certain places in the shell. The boney material helps make the lobster strong enough to resist the bacteria. Effected lobsters may not have as much bone, so their shells are weaker. Why are the shells weaker? There may be a few reasons. The water South of Cape Cod is warmer than it normally is. Climate change may be to blame. The water has a lot of pollution from cities like New York and Boston. There are many streams and rivers pouring into the area that are Affected by acid rain. All of these things may effect the lobsters in the sea. They may effect other creatures in the sea as well. Can you think of things that are happening in our neighborhood that may contribute to this problem? Post your ideas on the blog and I will share them with Dr. Kunkel. What does shell disease look like? Can you see the red spots on the photo on the right? That is shell disease. It can get much worse. Thanks Dr. Kunkel for sharing your work and your photograph.

The art teachers, Mrs. Bensen in CLE and Mrs. Piteo in WOS had groups of students decorate Styrofoam cups for an experiment on the ship involving technology, water pressure in science and perspective in art. You probably have felt water pressure. When you swim to the bottom of the deep end of a pool, you may have felt your ears pop. This is water pressure. It is caused by the weight of the water on top of you pushing down on you. Well, a pool is only 10 or 12 feet deep. Just imagine the pressure at 600 feet down. We wanted to do an experiment with water pressure. Since Styrofoam is has a lot of air in it, we wanted to see what happened when we sent the decorated cups to the bottom of the sea. Click here for a video and see for yourself. If you decorated a cup, you will get it back when I come in next week.

Here are some more interesting creatures that came up in our nets overnight. We have been in deeper water and some some of the creatures have been quite interesting.

This is a sea-hag. It is a snake-like fish that has some amazing teeth. We put one inside a plastic bag for a few minutes to watch it try to eat its way out. Take a look at this video to see what happened.

Here are three Spoon Arm Octopi. Each octopi has three hearts, not one. One pumps blood through the body and the other two pump blood through the gills. There are three octopi in this photo. How many hearts to they have in all?

This redfish are also an interesting criters. When they lay eggs, you can see the babies inside. They live in deep water. We caught this one at a depth of 300 meters. How many feet is that?

Here is a bobtail squid and a sea-start. The squid looks like an octopus, but it is not.

This skate case had a baby skate inside. Here is what it looked like as the tiny creature emerged.

Finally, the red on the underside of this crab are the eggs. Biologists call them roe.

Zee and Snuggy paid a visit to the ship’s hospital to take a look around. The hospital is amazing. They are able to treat a wide variety of injuries and ailments without having to call for help. They can even put in stiches if they need to. In cases of serious injury, however, the Coast Guard would have to take the patient to land with the helicopter or fast boat. Zee and Snuggy had a great time touring the hospital, and all three of us are just fine.

October 13, 2008March 18, 2021

Jacob Tanenbaum, October 13, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 13, 2008

Science Log

Happy Columbus Day everyone, and, since were in Canada, Happy Thanksgiving. Yes, that’s right, Thanksgiving. Here in Canada, Thanksgiving is celebrated on the second Monday in October. So a special note to my son Nicky: Happy Canadian Thanksgiving! Back to Columbus Day, though. Since that’s probably what your all talking about at home. In honor of Columbus Day, I thought I would try something interesting.

I made a replica of the instrument Columbus used to navigate his ship. It is called a Quadrant. Columbus would sight the North Star with his quadrant and measure its angle above the horizon. That angle is equal to your latitude. He used a quadrant to measure that angle.

This is what a quadrant looks like. You hold it up so you can see the star you want in your site. The weighted rope simply falls over the scale of numbers and indicates the angle. What instrument in math looks like this? Post your answers on the blog if you think you know. So did I beat the GPS? You will have to watch this video to find out.

Want to try sighting the North Star yourself? Here is how: Find the Big Dipper. Trace an imaginary line from the spoon up. The first bright star you come to is the North Star. Want to find our more about using the stars to find your way, or Celestial Navigation, click here.

We are fairly far out to sea right now. There is a point of land in Nova Scotia, Canada about 100 miles to our north, but most land is around 200 to our west. We are seeing a lot of off-shore birds like the Shearwaters pictured here. These little birds spend most of their lives in the open water feasting on fish. They come on shore only to breed, so landlubbers don’t see them very much. What a treat. They were part of a large flock that was foraging in the nets yesterday afternoon during a tow.

We also have a few land birds on board. They may have been blown out to sea by storms and have stopped on our ship for a rest. Several were eating what they could find out of the nets on deck yesterday. The nets on the Bigelow have 6 sensors, each reporting different variables, such as depth, the width of the net opening and the height of the opening back to the scientists on deck. One of the sensors stopped working and had to be replaced yesterday. Take a look at this video of how the repair was done.

The water temperature outside is changing. It is now much colder than it was. When we were further west, we were towards a warm current called the Gulf Stream that moves north along the east coast of the USA. The water was about 63 degrees. Now we are in a cold water current called the Labrador Current. This current brings water south from the Arctic along the Canadian coast and ends in the Gulf of Main. The water here is about 55 degrees or so. We are not seeing the dolphins anymore and some of the science crew thing the water temperature may be too cold for them. Take a look at this map of the water temperatures. Brighter colors are warmer in this picture. We have moved from the warmer greener colored water into the cooloer blue colored water. The red line represents our course.

WOS students who have not had a chance yet, should compare our ship to the one Columbus Sailed. Go back and look through the blog at the pictures of Snuggy and Zee in the different parts of our ship to help you. Post your answers on the blog. Finally, something very interesting came up in our nets today. We got this off the bottom in 1000 feet of water. It is wood. Clearly cut and shapped by a person and for a purpose. It appears to have been down there for a long time. How do you think it got there? Post your answers on the blog!

CLE students, try using these images of ships in the past as a story starter. Write me a short story about a trip on an old sailing vessel and incorporate some of what you have learned about their technology in your story. Can you tell me the story of how that wood ended up on the bottom of the ocean? Please don’t post these to the blog. They will be too long. Print them and show them to me when I get back on land next week.

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And now some answers to your questions:

RM – Good question: A sea spider is a sea-creature related to the horseshoe crab. It just looks a lot like the spiders we see on land.

Have we seen any sharks? We have seen a lot of dog-fish, which are a type of shark, but are not very ferocious. Our captain saw a great white off the bridge. Unfortunately, I was working below decks at that moment and did not get out to see it in time.

October 12, 2008March 18, 2021

Jacob Tanenbaum, October 12, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 12, 2008

Science Log

Here is a sample of what has come up in the nets overnight.

Here are several different types of sea-stars. I am always amazed by the wide variety of these creatures that exist in the ocean.

This little fellow might not look like much, but it has an interesting history. This creature is called a brachiopod. It belongs to one of the oldest family of creatures on earth. There have been brachiopods in the sea for at least 550 million years. That is long before there were even plants on land, let alone animals and dinosaurs. It is a simple shelled animal that has a single stalk that helps is stay attached to the rocks around it. Click here to learn more about this amazing creature.

Here is a sea cucumber. They live at the bottom of the sea and can be found all over the world. They are used to make medicine in some countries in Asia.

Remember that large raft of sargassum weed we saw yesterday? Some came up in the nets today. Here is what it looks like close up. She the little pockets that hold air? They help the sargassum stay afloat.

And of course, there is always garbage. We keep getting bits and pieces each time the nets come up. Here is a sampling. We found one entire Butterfinger candy bar with the chocolate still inside (no, we did not eat it), as well as some rope. How do you think it got here?

Let take a closer look at a sensor called a CTD. That stands for conductivity, temperature and depth. Remember the drifter buoy that we released a few days ago? It measures temperature on the top of the water and it can drift all over the ocean taking readings. A CTD takes its measurements as it descends through the water column and can go all the way to the bottom.

Have you ever seen barnicles move? They do. We found these huge barnicles in our net and we put them in water to encourage them to come out. Check out this video!

A lot of people have asked me about sea-sickness. Sea Sickness happens when your brain and body, which are constantly working to keep you balanced, get confused by the rocking of the ship. It is a terrible feeling, and I’m glad I have not been sea-sick at all on this trip. Some people do better than others on boats. I do not tend to get sea-sick unless the waves are very high, and I am used to the rocking of the ship now. The other night I was working on deck and I caught sight of the moon moving quickly across the sky. I wondered why it was moving so fast until I realized it was my ship that was moving in the sea and me with it. The moon only seemed to move. I guess that means I’m used to the rocking back and forth and hardly notice it now.

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MLL, SPL and MCL, Snuggy and Zee are having a great time and none of us are sea-sick. I put more information about it in the upper part of the blog entry. Thanks for writing.

SQ, CS, KM and VM: It is nice fall weather. Not too hot, not too cold. I love it. I have not felt uncomfortable even when I am working out on the wet deck of the ship.

GG: It is not hard to sleep at all most nights. There was only one night where the waves were high and I bounced around too much to sleep well. The rest of the nights were fine. The ship rocks me to bed at night. I do miss WOS. See you soon.

October 11, 2008March 18, 2021

Jacob Tanenbaum, October 11, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2009

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 11, 2008

Science Log

Greetings from Canada, my son Nicky’s favorite place! We are now in Canadian waters. We have crossed the international boarder. More amazing things keep coming up in our nets. Today we had some interesting sea-stars. Take a look. The larger ones are called Sun-Stars. Do they look like the sun to you? Sea stars are scavengers. They will move around the bottom looking for whatever food is laying around. The legs of the sea star have small tentacles that push food towards the mouth in the center.

Did you know that squid can change color? Often male squid change color to attract a mate or to scare off other males who are competing with them. If there are two males near one female, they able to turn one color on the side facing the female, and then turn another color on the other side facing the male.

We had more dolphins circling the ship last night. We think our lights may be attracting certain fish or squid, then the dolphins come to eat that. They are not with us during the day at all. One of the benefits, I guess, of being on the night watch. I cannot shoot still photos due to the low light, but have wonderful video. The sounds that you hear on the video were recorded with the ship’s hydrophone. This is a special microphone that can record sounds underwater. The sounds were recorded as the dolphins swam around the ship. You can hear the sound of them swimming by as well as the sound of their sonar as they locate fish to eat. Click here to watch and listen. Thanks to survey technician Pete Gamache for recording this for us. Click here to see the video. Don’t miss it!

We drove past some seaweed called sargasum weed. It normally grows in an area towards the middle of the Atlantic called the Sargasso Sea. We are well west of the Sargasso, but this seems to have drifted our way. Sargasum Weed grows on the surface of the water. These huge mats of seaweed support an entire ecosystem of sea creatures. Many come to seek shelter in the weeds. Many more come to feed on smaller creatures hiding there.

Snuggy and Zee paid a visit to the fantail of the ship.

The fantail is an area by the stern of the vessel where the nets are deployed. The photos show the area where the work gets done. Our ship works all night long, of course, and trawls are done at night as well as during the day. Take a look at this video which explains how trawls are done.

Our ship is shadowing another NOAA ship, the Albatross. Why? The Albatross is an old ship and will be replaced by the Bigelow in the years to come. At this point, the ships are trawling in exactly the same place to see if they get similar results in their surveys. Making sure the vessels measure the same thing the same way is called calibration. Right now we are doing calibration with the Albatross.

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Now some answers to your questions:

RM – No we did not see Nantucket yet. We were too far out to sea. We may see it on the way back. Thanks for writing.

T – I love Block Island too. Thanks for the warning about rough seas. I am glad you and your mom are both enjoying the blog as much as I enjoy writing it for you. I’m used to the 12 AM shift now. I that I finally got 8 hours of sleep.

AR – There were TONS of skates in the water.

Hello to Mrs Eubank’s Class. Its great to hear from you. Great questions. Now for answers:

— Amanda, I think fish can get smaller pieces of plastic confused with tiny plankton, but our buoy is too large for that. I don’t think it will hurt fish. I think they will stay away from it.

–Tiffany, this is a tough question and a very good question. I guess over time, our buoy will stop working and will become floating trash. The truth is all science effects the environment you study. The trick is to do more good with your work than harm. Our buoy will help us understand our environment better so that all of us will do less harm in the future. Our ship also burns fuel as we study the ocean. That pollutes a little, but hopefully through our work, we do more good than harm to what we study.

Weston, It felt like the drifter weighs about 35 pounds or so.

Bryce, we use a large net to scoop along the bottom. The opening is about 4 meters wide.

Luke, we have not, nor do I expect to find new species. Our purpose is to learn more about the species that we already know about.

Bryce, we were about 140 miles from the nearest land the last time I looked.

RJ, some scientists made our drifter.

Weston, there are about 1000 drifters right now in the open sea.

I enjoyed your questions. Thanks for writing.

Mr. Moretti’s class, I’m not sure what killed the whale, but remember, all things the live also die. We cannot assume that something human beings did killed that whale. With all the pollution we create, we cannot assume, however, that we did not hurt it. We should stop polluting just to be sure we do not hurt other living things.

Many of you have are working hard to figure out our math question from the other day. Here is how it works. If we are going 8 knots for 24 hours, we multiply 8 times 24 and get 192 knots in a day. If we want to convert that to miles, we multiply again by 1.15 because each knot is 1.15 miles. We get 220.8 Congratulations to all who got this correct. It was a tough question.

Several of you have asked how long I would be on the ship. I will be here until the end of next week. I leave the ship on Friday October 17th.

LP – I enjoy the show Deadliest Catch very much. I think it is cool that scientists sometimes do that same kind of exciting work.

SD, there is no way for me to videotape under that water, but tomorrow I will show you how our sonars (we call them echosounders) work. That is one way to see under the water.

DT from SOMS dont’ worry, there is no light pollution out here. I am on the back deck of a working ship, so right where I am there are lights. I need them to do my job. I just have to go to the upper decks to get away from it or ask the bridge to shut them down for a bit.

October 10, 2008March 18, 2021

Jacob Tanenbaum, October 10, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 10, 2008

Science Log

Did you figure out the answer to yesterday’s question? Those creatures were the real cast of Sponge Bob Square Pants TV Show. We saw a sponge, like Sponge Bob, and sea stars like Patrick, plankton, like Sheldon Plankton, some squid like Squidward, a crab like Mr. Krabs next to a sand dollar (because Mr. Krabs loves money), a lobster like Larry the Lobster and a snail like Gary. All the creatures in the program actually exist in the sea, except for squirrels, and we have seen them all on this adventure. Amazing creatures keep coming up in our nets day after day. Let’s take a look at a creature called a skate. The skate makes those funny black rectangles that you find on beaches. Take a look at where those rectangles come from and what is inside of them. Click here for a video!

Skates also have interesting faces. They live along the bottom of the sea. Their eyes are on top of their head to spot predators and their mouthes are below to eat what is on the bottom. They have two nostril -like openings above their mouth called spiracles. They look just like eyes but actually help the skate breathe. Here are a few interesting skate faces.

This sea robin uses three separate parts of its pectoral fin, called fin-rays to move, almost like its walking along the bottom of the sea as it looks for food. This helps is move very quietly, making it able to sneak up on prey unobserved.

These two baby dog-fish show different stages of development. This one is still connected to an egg sack. The other has broken loose from it, but you can still see where it was attached just below the mouth. Usually in this species, just like most fish in the shark family has eggs that develop inside the mother’s body. She gives birth to the pups when they have hatched from their eggs and are ready for the open sea.

Many people have asked me about garbage. Here is some of what we have found so far. We caught part of someone else’s fishing net. Here is a Styrofoam cup and here is a plastic bag, which we caught 140 miles from the nearest land. How do you think it got here?

Finally, we were visited by some dolphins last night. They were eating smaller fish and as they came in for their attack, you can see the smaller fish jumping straight out of the water into the air to try to avoid being caught. Click here for a video.

Snuggy and Zee decided to visit the kitchen today. Here are Zee and Snuggy with our chief Steward Dennis M. Carey and our 2nd cook, Alexander Williams. The food here is fantastic. See how large the kitchen is? We have a lot of people to feed on this ship, and the cooks here work hard. You have seen a few of the many different jobs that people can do on a ship like this. You have seen the scientists at work in the labs, you have seen the engineers who make the engine go. You have been to the bridge where the NOAA Corp officers run the ship. You have been to the kitchen where the cooks keep us so well fed. Tomorrow, you will see how the deck crew trawl our sample nets through the water. Keep checking the blog this weekend. There will be lots to see.

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Now, some answers to your questions and comments:

Hi to KD and to Derek Jeter. We are staying safe. Thanks for writing.

Hello to St. Mark School in Florida. I’m glad you are enjoying the blog. I really enjoyed your thoughts about what these fish have in common. Great work. Here are some answers:

If a ship hit a drifter, the drifter would probably be broken. But the ocean is a big place, and that does not happen very often.

Can your school adopt a drifter? Of course! Take a look here: http://www.adoptadrifter.noaa.gov/. In the mean time, you are welcome to follow the adventures of our buoy. Keep checking this website!

I have Snuggy because some of my kindergarten classes asked me to take a bear with me to sea. So I did!

How heavy are the drifters? It weight 30 pounds or so, I would guess. Enough to make me work to pick it up.

I knew the whale was dead because part of it was decomposing. We could see it and we could smell it. Yuck.

Did any fish try to bite me? Yes. One scallop closed its shell on my finger. I had to be quick to get my hand out of the way in time. Other than that, no.

At 8 knots per hour, the ship could travel 192 knots, or about 220 miles in a day.

Congratulations to all who calculated correctly. The truth is that we have to stop for sample trawls every hour or two, so we seldom make our top cruising speed when we do work like this. So, we usually travel less than we could.

Oh, and to all those who asked, so far I have not gotten sick. Yet.

Thanks all for writing. Keep checking the blog!

October 9, 2008March 18, 2021

Jacob Tanenbaum, October 9, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 9, 2008

Science Log

Hello everyone. I hope you are all enjoying your day off today. Since you have time off from school, I bet many of you are spending time observing these sea creatures…

Can you guess what they all have in common? Post your answers on the blog.

Need a hint? That crab is standing right by a sand dollar. Money. Hmmm.

This angler fish is an interesting character. It sits on the bottom of the water and blends in with its surroundings. It has a small hair that sticks out of its face that is use to lure prey closer to its mouth (just like its cousin from deeper waters, the angler fish). When the prey get close by it strikes. With all of those rows of sharp teeth it makes short work of smaller fish. Can you imagine a fish with a built in fishing rod. Very interesting. We came across a dead whale floating in the open sea. What an amazing sight (and smell). Yuk. Look how big it is next to the ship. The barnacles on its face were the size of baseballs.

A lot of you have asked what my stateroom looks like. Here are Snuggy and Zee in my “rack.” That’s what we call a bed. Do I have a roommate? Yes. Sean is very nice. I’ve only met him once or twice because he sleeps when I work and I sleep when he works, so we don’t run into each other much. That’s often how things work on a ship like this. The second picture is the door to the corridor. The locker to the right is where I keep my gear. The door on the left leads to the “head,” which is what we call the bathroom on a ship.

Many of you asked what the engine room is like. Joe Deltorto, our Chief Engineer, was kind enough to give me a tour. The Bigelow has an interesting engine room. Huge diesel generators make electricity. Lots of it. Enough to power all of our computers, sensors, lights, and even the ship itself. The propeller is turned by large electric motors. This makes the Bigelow one of the most quiet research ships anywhere. Why is that important? Sound is often used to see what is below the surface of the water. Sonars push sound through the water and listen when it echos back. That’s often how boats see what is under them. The Bigelow has a more sophisticated version of this called an echosounder. It can see much more, but still uses sound to see. So the engines have to be super quiet.

Today we will deploy our Drifter Buoy. This is an instrument that we are adopting. It will float in the open sea for the next 14 months or so and tell us where is has gone and what the temperature of the water around it is. Drifters are an important way that scientists measure. Keep watching here. I will update the blog when I deploy the drifter.

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Here are some answers to your wonderful questions and comments.

Have I gotten sea-sick? No. So far, the water has been very calm. I feel very luck. The ship has hardly moved at all.

Does it smell on board because of all the fish? Surprisingly, no. even the fish labs have lots of fresh ocean air coming through. There is no bad smell. When we came across a rotten whale floating in the ocean, then there was a smell! Oy!

The whales we have seen so far were all humpback. Even the dead one.

Have I seen fish that were new to me. Oh yes. Most of what we have seen has been new to me! That’s what makes these trips so much fun! I love learning new things.

What do I want to see that I have not seen yet? Dolphins.

In answer to so many of your questions, no, I have not fallen in yet. Either has anyone else. The Bigelow is a very safe ship. Everyone is well trained and very concerned for the saftey of themselves and all the others on board. I feel very safe here.

Hello to Ms. Farry and classes in TZE. I’m glad you are looking at the blog.

Hi Turtle. Nice to hear from you. Yes, I think we can work that out. We are on the shelf, so our deepest CTD deployment will be only be about 300 meters. Will that do?

FD and JEGB, thanks for your questions. No, so far we have not seen any 6 pack rings on any creatures. I did see some garbage float by many dozens of miles from shore. It was right where the whales were swimming. Sad.

IJ, cool idea, though I wonder, though if the water would carry toxins from the smoke into the streams rivers and oceans? Keep thinking maybe you will discover a way to solve this problem someday.

Mi Mrs. Bolte’s class. I’ll get you engine room photos very soon, and there is a photo of my stateroom for you today. I’m glad you like the blog.

MS, the people here are friendly, very professional and so helpful with everything I have needed for all my projects.

MH, yes I do miss my family.

MJ, we see lots of ships out here. Yes. It has been fun to see.

Several of you asked about cell phones. They do not work out here. We are way too far from land. All the crew were on deck as we left port making their last calls to their families. So was I.

Hello to Mrs. Ochman’s class, Mrs. De Vissers’s class, Mrs. Sheehy’s and TN’s class. I hope the pictures in the last few days answered lots of your questions.

Mrs. Christie Blick’s class, here are some answers to your questions: No, the clothes just keep you dry (and comfortable) when you are working. You get used to them. I am adjusting well to the time change. It is a little like going to New Zealand like Mrs. Christie-Blick did recently. I wake up at about 8:00 PM, go to work at midnight and then go to sleep in the early afternoon. Our time, that is. If I were in New Zealand, I would be on a normal schedule. I’ll post pictures for your soon for my stateroom. It is very relaxing here. There is not a whole lot to worry about. There is a lot of work, but it is not hard.

The zig in our course, by the way is probably where we stopped for a trawl. We sometimes circle around when we do that.

Hello Mrs. Benson. Thanks for checking out the blog. No artists here at the moment. I enjoy amature photography and what subjects there are out here!

Hello Guy D. Thanks for following the blog. I appreciate your support.

October 8, 2008March 18, 2021

Jacob Tanenbaum, October 8, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2009

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 8, 2008

Science Log

Today we started working. My shift is 12 midnight to 12 noon, so I slept for a few hours in the afternoon and then worked overnight and into the morning. It is hard to get used to staying up all night. It feels a little like I took an unexpected trip to Europe. Our first haul took the longest to sort out because many of us were learning how things were supposed to work, but after a full day, it started to feel routine. Here is a sampling of some of the amazing creatures that came up in our nets:

This is a dogfish. It is a relative of the shark, but without all those ferocious teeth. So many people have asked me if I have seen a shark, I had to put these photos up for you!

This lumpfish is a related to the anglefish, which has a light and lives in deeper water.

Here is a squid, a sea-robin a baby dogfish that had just hatched and a flounder or two.

These are the skate egg cases. Have ever found one on a beach? Now you know what it grows into.

This is a long horned sculpin. These creatures buzz when you hold them and stick their fins up to scare you off. Amazing!

The largest lobster I have ever seen. Can you guess why I'm smiling in the picture? Here is a special shout out to my favorite lobster (and clam) fans, Simon and Nicky Tanenbaum! — The largest lobster I have ever seen. Can you guess why I’m smiling in the picture? Here is a special shout out to my favorite lobster (and clam) fans, Simon and Nicky Tanenbaum!

And finally, we saw whales!

~~~

NOAA Ship Albatross, also working on this survey

On a personal note, this is a very comfortable ship. Zee and Snuggy will continue to show us around each day. Several of us watched the presidential debate on live satellite TV in the lounge tonight. Here are Snuggy and Zee having a quick meal.

Cottage Lane students, we are traveling about 8 knots per hour right now. Can you calculate how for we can travel in a day? Remember, the ship works all day and all night. How far can it go at that speed? Post your answers on the blog, then watch the video. Would you like to do this kind of work? Let me know.

I have enjoyed reading your comments very much. We are going to have a little delay in my responding to comments today as I get used to working the midnight shift. You are all correct when you say that the Bigelow has a LOT more technology than the Eagle. Consider this: I went on deck at about 4 in the morning to do some work and found that I could not see the stars because the electric lights on the ship were so bright! I guess we have to have a GPS when you reach that point! Celestial navigation just will not work on a ship with lights so bright!

A lot of you were focusing on what sailors then and now need to survive: Food and water, for example. Did you know old sailing ships had to bring their entire supply of fresh water with them in barrels. Today, our ship can take the salt out of seawater to make it safe to drink. Technology has changed the way we live on ships!

To my fellow TAS from the Delaware: Thanks for writing. We are doing bottom trawls and are looking to survey the entire benthic community here. Thanks for the sea-sickness tips. I may need all the help I can get if the weather decides to change.

Lynn: thanks for reading the blog. Zee is fine, and so far so am I. With luck, the weather will hold! If not, Zee may do better than I do. We could see Cape Cod earlier today. Beautiful!

October 7, 2008March 18, 2021

Jacob Tanenbaum, October 7, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

This one shows our ship under the bridge leading into Newport.

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 7, 2008

Science Log

Our first day at sea is a day of mainly travel and drills. We are moving east around the island of Martha’s Vinyard towards our first tow of the day.

Did you know that ships like the Bigelow have all kinds of safety procedures? We had two drills today. In one the crew all went to the back of the ship and put on our survivial gear. This suit will help us survive and be spotted by rescurers in the event we have to abandon ship. It is called an abandon ship drill.

During a fire drill, we go to our assigned safe spot for attendance – we call it muster. And the officers and crew practice putting out a fire. A fire on a ship can be dangerous. There are no fireman to call, so crew have to learn to put out fires on their own. That takes practice.

Snuggy and Zee also had their own tour of the ship. Each day they will visit a few places and show you pictures so you can see what different parts of the ship look like. They came in on the gangplank this morning. Just like all the sailors do. Tomorrow, WOS students, please tell me what other parts of the ship we should visit. CLE students, you had lots of good ideas about how Columbus’ ship and mine are different. Technology is at the top of the list. Imagine crossing the ocean with just a compass, a steering wheel and a quadrent. What an adventure. We live in luxury even on our working ship. My quarters even have carpet! Keep those ideas coming. Good night to them both. It’s four in the afternoon and time for bed. I get up at 11 and start work at 12 midnight.

The nets are ready for our first day of fishing. Zee and Snuggy are ready to help.

————————

Hello to all who wrote so far. Mrs. Christie Blick’s class, Mr. Connaughton’s class and others want to know when we start our survey work: We will begin our experiments late today after I have gone to bed, so I will tell you what we catch tomorrow. And I will send you LOTS of photographs! What do we want to catch? Well, different scientists need different things for their work. One of our scientists is studying lobsters. I hope we catch more than he needs so I can have a few for myself!

CP and others, it is not likely that we will see anything new in the water that has never been discovered. Sceintists study this area in detail every day to look for changes to the number of fish or patterns in where they live. we have a good idea of what is doen there.

AR, I will try to answer all your questions in the days to come. I have a bed called a rack here on the ship. I have a small quarters and one very nice roommate. I’ll show you around soon.

The weather here is perfect. The water is not cold or hot. It is just right. By the way, I will not be going to the bottom. We will lower nets to the bottom and see what we bring up.

EA, this ship is 210 feet long.

My brother David asks if I bring music along. Yes. I have my whole collection on my computer. Including all your discs!

October 6, 2008March 18, 2021

Jacob Tanenbaum, October 6, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 6, 2008

Now here is a view of the bridge of NOAA Ship HENRY B. BIGELOW.

Science Log

I made it to Newport and am writing from the ship. It was an interesting trip, can you find Newport, RI, on the map?

Remember its’ Columbus Day next Monday and we are going to spend some time on this cruise comparing this ship to the one Columbus was on. I stopped off to see an old Square Rigger Sailing Ship run by the Coast Guard. It is called the Eagle and it is based in New London, Connecticut. Here is what the bridge of the Eagle looks like.

How do the crew of the Eagle know where they are? They use the sun and the stars. In fact, it is the only Coast Guard Base where Celestial Navigation is still taught. Here a friendly Coast Guard Officer, Lieutenant Lally, shows us how to use a sextant. See the tables below? He needs those to convert his sextant sighting to a latitude.

Thanks to Lieutenant Lally and to the entire crew of the Eagle for their hospitality. Fourth graders tomorrow should work in pairs and post 4 ways the Eagle and the Bigelow are the same and 4 ways they are different to the blog. Then you can work on the navigation part of this website. Don’t miss the simulation of the tool you just saw demonstrated.

Newport is also famous for mansions an beautiful sea coast. Here are a few photos of the mansions. Thank you to Harle Tinney and her wonderful staff at Belcourt Castle for letting me take photos of the inside for you. She told me something else about the Castle. The weather vane at the top of the castle was marked on the maps sea captains used back in the old-days. From that weather vane, they could calculate their position and avoid crashing on the rocks nearby.

See you tomorrow.

~~~~~~~~~~~

Response to your questions and comments: Thanks to all for your good wishes. MAB – I will tell you all about what we catch. OG, we are not permitted on deck while work is going on unless we have a life jacket. Everyone here cares about safety. CB, the ship holds about 36 people. I’m not sure how many are sailing on this cruise. About half the crew are scientists. Several of you asked how long I would be gone for. I’ll be gone for about two weeks. We come back on the 17th of October. Many of you suggested I bring warm clothes. Yes I did. I brought just one suitcase (there is not a lot of room on a ship for extra stuff), but it is full of clothes. I brought lots of layers as well.

Hello to Miss. William’s Class: I am very excited to be going to sea again. I love it. I’ll be back in two weeks, but while I’m away, I’ll tell you all about what we catch and what we do while I am out.

Oh, and to everyone who asked, If I get sick, I’ll tell you that too! I promise! Thanks for writing.

J from TZE, I’ll show you about the cups in a few days. We are going to do an experiment with them. Keep watching!!

MH you asked a lot of great questions. Thanks for writing. I’ll try to answer all of them over the next few days. As for where I’ve been. Well, I spent the last two voyages in Alaska, so this will be very different. And much warmer.

Oh, and I did bring a few things to read. Most of them are on my computer to save space. There are a few books.

Keep watching the blog and keep writing! I’ll respond to your comments as best I can either personally or in the text of the blog now and in the days ahead. Remember, students should just use their initials when commenting.

October 5, 2008March 18, 2021

Jacob Tanenbaum, October 5, 2008

NOAA Teacher at Sea
Jacob Tanenbaum
Onboard NOAA Ship Henry Bigelow
October 5 – 16, 2008

Mission: Survey
Geographic Region: Northeast U.S.
Date: October 5, 2008

Science Log

I am packed and ready. Here is a photo of Zee, our High School Mascot and Snuggy on their way to Newport to meet the ship. Monday, I will leave early in the morning and will post a blog entry from Newport, Rhode Island before we leave on Tuesday.

Next to Zee are the styrofoam cups our 4th graders and 1st graders made for an experiment. Some of our 4th graders also decorated my hardhat. It looks great! Thanks for helping keep me safe and in style while I work on deck, and thanks for all your comments and suggestions. You really helped me remember what to bring!

September 25, 2008April 2, 2021

Marilyn Frydrych, September 25, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 25, 2008

Weather Data from the Bridge
41.27 degrees N, 70.19 degrees W
Partly Cloudy with wind out of the W at 19 knots
Dry Bulb Temperature: 26.0 degrees Celsius
Wet Bulb Temperature: 20.9 degrees Celsius
Waves: 2 feet Visibility: 10 miles
Sea Surface Temperature: 21.6 degrees Celsius

Science and Technology Log

We received a call from the Coast Guard yesterday telling us to seek shelter because of the impending interaction of Hurricane Kyle with a strong cold front approaching us. We cut our cruise a day short and headed for Woods Hole. As we headed back in I had time to reflect on my experiences over the last couple weeks. I particularly appreciated all the positive energy of the scientific crew. They were always very helpful and thoughtful as well as efficient. I learned a lot from them. Each morning I found myself looking forward to what might unfold as we worked together. I totally enjoyed my four or five hours of free time each day. Often I would spend this time on the bow or the fantail taking in the rhythm of the sea. It was a very soothing experience much like watching a camp fire. The sunsets, too, brought a sense of awe and peace.

Each of the crew was a master of multiple tasks. Jon Rockwell was not only an expert cook, but a medic as were three others aboard. As part of their initial training with the NOAA Corps the four officers had entered a room fully in flames and totally filled with smoke. If they had to, they could navigate by the stars. Two of the officers were NOAA trained SCUBA divers. The engineers could fix anything whether it had to do with distilling water, leaking hydraulic pipes, stuck drawers, broken toilets, cracked welds, or the various diesel engines. They were experts in the “green” rules governing disposal of waste. The ET specialist could fix both hardware and software. The scientists knew their software programs backwards and forwards. All very impressive.

Each day brought a new, wondrous sunset.

September 24, 2008April 2, 2021

Marilyn Frydrych, September 24, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 24, 2008

Weather Data from the Bridge
41.27 degrees N, 70.19 degrees W
Partly Cloudy with winds out of the W at 19 knots
Dry Bulb Temperature: 26.0 degrees Celsius
Wet Bulb Temperature: 20.9 degrees Celsius
Waves: 2 feet
Visibility: 10 miles
Sea Surface Temperature: 21.6 degrees Celsius

Science and Technology Log

Marie Martin, the bird watcher, came rushing down from her perch on the flying bridge in the early afternoon announcing that she had just spotted a humpback whale close by. We all rushed here and there to get a view. I went up to the bow and looked for about 10 minutes. As I came back through the bridge LT(jg) Mark Frydrych, the OOD (Officer of the Deck), and Marie were talking about a right whale entangled in a net. Mark called the captain seeking his advice. Whenever a situation like this is observed the captain is expected to report it. The captain told Mark to report it and let the trained people steam out to try to find it. I interjected that I never did spot the pilot whale. Everyone said, “What pilot whale?” Mark said he saw a right whale. Marie piped up that she had said it was a humpback whale. Then I remembered that indeed she had said humpback whale. At that point the whole thing was moot because the humpbacks are not endangered. Then we asked Mike, the chief scientist, what would happen if a right whale got caught in his net. He said he didn’t want to think about it. When a sturgeon got caught he said he had two weeks of doing nothing but filling out forms. If a right whale got caught he would probably have 2 months of paperwork.

September 23, 2008April 2, 2021

Marilyn Frydrych, September 23, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 23, 2008

Weather Data from the Bridge
42.42 degrees N, 67.39 degrees W
Cloudy with wind out of the N at 32 knots
Dry Bulb Temperature: 15.5 degrees Celsius
Wet Bulb Temperature: 11.6 degrees Celsius
Waves: 6 feet
Visibility: 10 miles

Science and Technology Log

Yesterday we were fairly busy doing CTD casts and trawls. Today we woke to find the night crew just starting to record the lengths and weights of their large catch. We grabbed some cereal and took over from them at 5:45 a.m. They had collected and sorted all the fish. Jacquie and I took about two hours measuring, weighing, and examining the innards of the half basket of herring they left us. Our chief scientist, Dr. Mike Jech, summarized his findings so far in a short report to everyone including those back at Woods Hole: “Trawl catches in the deeper water near Georges Bank have been nearly 100% herring with some silver hake. Trawl catches in shallow water (<75 m) have occasionally caught herring, but mostly small silver hake, redfish, butterfish, and red hake.

A night haul of herring. Notice the brilliant blue stripe on the top of the herring. The camera’s flash is spotlighted in the reflective tape on the life vests.

Small being less than 5-6 cm in length. We caught one haddock this entire trip. Trawl catches north of Georges Bank have been a mix of redfish and silver hake, with a few herring mixed in.” This afternoon the Officer of the Deck, LT(jg) Mark Frydrych, gave me a run down of many of the instruments on the bridge. I spotted a white blob on the northeastern horizon and pointed it out. He showed me where it was on the SIMRAD FS900, a specialized radar. The SIMRAD FS900is often able to identify a ship and its name. This time it couldn’t. Looking through binoculars we could see it was a large container vessel. Then we looked at a different radar and saw both the ship’s absolute trajectory and its trajectory relative to the Delaware 2. It was on a path parallel to the Delaware2 so Mark didn’t worry about it intersecting our path. We also noticed another ship off to the west and north of us on the radar, but we couldn’t yet see it on the horizon. It too was projected on a path parallel to us.

Then Mark pointed out an area on the SIMRAD FS900 outlined in red. It’s an area where ships can voluntarily slow to 10 knots in an effort to avoid collisions with whales. It seems that sleeping right whales don’t respond to approaching noises made by ships. There are only about 350 to 500 of them left and they are often killed by passing ships. The Delaware 2 was steaming at about 7 knots because in the 6 ft waves it couldn’t go any faster. However the container ship was steaming at 15.5 knots. Few ships slow down in the red zone.

Mark showed me how to fill out the weather report for that hour. I typed in all my info into a program on a monitor which assembled all my weather data into the format the weather service uses. I first recorded our position from an instrument displaying the latitude and longitude right there above the plotting table. I read the pressure, the wet bulb temperature and the dry bulb temperature from an instrument which had a readout in a room off to the starboard of the bridge. The ship has two anemometers so I averaged these to get the wind speed and direction. We looked at the waves and tried to imagine standing in the trough of one and looking up. I figured the wave would be over my head and so estimated about 6 feet. We also looked at the white foam from a breaking wave and counted the seconds from when it appeared until it rode the next wave. The period of the wave we watched was four seconds. Next we looked out the window to search out any clouds. It was clear in front of us but quite cloudy all behind us. I estimated the height of the clouds. I typed all this information into the appropriate boxes on the monitor. It was all so much easier than my college days when we had to gather the information manually then switch it by hand into the code appropriate for the weather service. The OOD sent this information to NOAA Weather Service on the hour, every hour operations permitting.

Personal Log

Though my son was instrumental in persuading me to apply for the Teacher-at-Sea position I haven’t seen much of him thus far. He’s standing the 1 to 4 shift both afternoon and night. When I’m free he seems to be sleeping. We don’t even eat meals together. That’s why I made a special trip to the bridge today to meet up with him during his watch.

September 22, 2008April 2, 2021

Marilyn Frydrych, September 22, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 22, 2008

Weather Data from the Bridge
42.52 degrees N, 68.06 degrees W
Cloudy, wind out of the E at 11 knots
Dry Bulb Temperature: 15.2 degrees Celsius
Wet Bulb Temperature: 14.0 degrees Celsius
Waves: 1 foot
Visibility: 10 miles
Sea Surface Temperature: 16.9 degrees Celsius

Science and Technology Log

Today was more of the same–more CTD’s and trawls. Just after lunch we had our weekly fire drill. This time the fire was in the galley and Jon Rockwell, the chief cook, was supposedly overcome with fake CO2 smoke. After everyone except Jon was accounted for the search for him began in earnest. The Hollywood style smoke machine produced smoke so thick the crew had difficulty finding Jon “passed out” on the floor of the galley. Part of the drill was lifting Jon on a stretcher up the stairs and out onto the fantail. Our station was redirected to the bridge this time where we were allowed to listen as LT(jg) Mark Frydrych conducted the exercise. I had noticed emergency firemen gear here and there in the halls. Always there was a radio charging next to the gear. That’s how they communicated. All in all I was very impressed with the expertise and calmness of everyone even when plan A didn’t work and plan B had to be tried. Safety always came first. For a good 45 minutes following the drill the crew and officers talked over possible improvements. There was no messing around. Everyone was in earnest and aware of the seriousness of the drill and the debriefing. Yet this group had been practicing fire drills weekly every time they were at sea.

Personal Log

I already knew three people aboard when I arrived. My son, LT(jg) Mark Frydrych, was the Operations Officer. He’s the one who suggested I apply for the Teacher-at-Sea position. On a previous visit to Woods Hole I had met Erin Earley, the engineer wiper. We had hit it off then and continued to get to know each other better on this cruise. Then there was my hiking pal from Colorado, Jacquie. She and I both work at Pikes Peak Community College in the math department. She’d taken the semester off and was looking for an adventure. After applying for the Teacher-at-Sea position I learned that the Herring Legs needed volunteers. Jacquie signed up for the first two legs. This cruise was her second leg. I experienced a tremendously easy adjustment stage because of these friendships.

September 21, 2008April 2, 2021

Marilyn Frydrych, September 21, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 21, 2008

Weather Data from the Bridge
42.00 degrees, 68.06 degrees W
Partly cloudy, wind out of the SE at 6 knots
Dry Bulb Temperature: 18.0 degrees Celsius
Wet Bulb Temperature: 15.7 degrees Celsius
Waves: 1 foot
Visibility: 10 miles
Sea Surface Temperature: 17.7 degrees Celsius

Red Fish waiting to be sorted and later in a clothes basket.

Science and Technology Log

We returned to a spot that Mike had marked on our computers as a place where he would have liked to have sampled the fish when the seas were high and we were unable to fish. We sent down a CTD at dawn and then deployed our net. I’m learning more about the importance of the man at the helm. If he speeds the boat then the net will rise. Conversely, if he slows the net falls. The desire of the scientist is to get a representative sample of the fish in the area, but not to take more than what is needed since we return very few alive to the ocean. The NOAA Corps officer at the helm knows this as well and has his own sonar so that he knows at what level the fish are located. He adjusts the speed of the boat as he sees fit to catch an appropriate number of fish while checking with the chief scientist or watch chief to ensure the net is where they want it. I also learned that red fish are often associated with American herring. Red fish are a sweet delicious fish, which were over fished during World War II. They’ve been on the US’s banned fishing list since that time.

We brought up in today’s catch about 200 small fry red fish. We also collected about 20 good-sized ones running to about 12”. The large ones take up to 60 years to grow to the size where they are worth harvesting to eat. We only brought up 5 herring. This time there was one 8” squid. We deployed the Tow Body this afternoon around 3:30 p.m. It’s an undersea camera. Unfortunately the wires connecting the Tow Body to the computers had gotten broken as it sat on the fantail. Possibly the wires got jostled during clean up. (We use a fire hose to clean the fantail after each trawl.) Possibly people stepping on and over the wires as they walked about on the fantail broke the wire. This wasn’t learned until moments before we were to deploy the instrument. The ET specialist, Dave Miles, figured out where the wire was broken fairly quickly and reconnected it. That gave us connectivity, but still there was a problem of the Tow Body not responding to commands from the computer. The chief scientist, Mike, tackled that part of the problem. Somehow he fixed the software. We got the go ahead signal about three hours later.

This was the only deployment in which the scientific crew was allowed on the fantail as part of the deployment. Like the fishermen we had to wear a life jacket and hardhat. Four of us held onto lines that kept the Tow Body from twisting as it entered the water. Unfortunately one of the lines got loose. Displaying great skill fisherman Jim Pontz used a grappling hook to retrieve it. By now we had drifted so far off course we had to circle back into position. When we finally got the instrument in the water our fish had left the area. We could tell that by the echograms. The plans were to leave the Tow Body’s lights off until the camera was surrounded by fish.

Otherwise the fish swim away from the lights. Only later when we again came into a school of fish did we learn that the lights weren’t responding. The endeavor was aborted. From a scientific standpoint we did learn something. The Tow Body needed more work. We also learned that we should start disconnecting the wires from the Tow Body when it’s stored on the fantail.

Personal Log

I watched the Broncos play this afternoon. No one else was interested. Four or five of the crew watched different football games throughout the day. They seemed to have time for their favorite team, but no one seemed to spend hours and hours watching game after game. The most popular form of relaxation was watching movies. There must be over a hundred DVD’s to choose from. The screen is a large flat panel screen.

Fisherman Jim Pontz using the grappling hook to retrieve a loose line attached to the Tow Body. — Jim Pontz using the grappling hook to retrieve a loose line.

September 20, 2008April 2, 2021

Marilyn Frydrych, September 20, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 20, 2008

Weather Data from the Bridge
42.53 degrees N, 67.51 degrees W
Cloudy, wind out of the E at 11 knots
Dry Bulb Temperature: 15.2 degrees Celsius
Wet Bulb Temperature: 14.0 degrees Celsius
Waves: 1 foot
Visibility: 10 miles
Sea Surface Temperature: 16.9 degrees Celsius

Science and Technology Log

We did a CTD with an attached water bottle and then deployed a net. We backtracked today and redid the sites we found yesterday which had good herring potential. About 10:30 in the morning we collected about 1/3 of a clothesbasket of fish. Most of that were herring and mackerel, with the usual small butterfish, goosefish or lumpfish, red hake fish, small jellyfish, and Ilex squid. The catch included an unknown two inch fish which Mike, the chief scientist, conjectured had gotten caught in a warm eddy off the Gulf Stream and ended in the wrong part of the ocean much like the jet stream blows birds off course. Part of sorting the fish involved gutting one to three each of the different lengths of herring to determine their sex, age, and what they had been eating. With practice and much patience on Robert and Jacquie’s part I learned to recognize the stomach and sex organs of the fish. None of the herring today had anything in their stomachs, while those of two days ago had lots, mostly krill. With two of us working it took about 45 minutes to measure the length and weight of each herring. They varied When we finally collected the net we had 3 basketsful of redfish, half a basket of silver hake, 4 herring, one large goosefish about a foot long, and a rare Atlantic Shad about 2 feet long.

To measure our fish we used the magnetized pointer in the upper right hand corner of the picture. It looks like a cigarette. We lined up the fish’s head against the black backstop. Then we stretched the body straight out. When we pressed the pointer against the end of the fish’s body an electrical circuit closed and the computer automatically recorded the fish’s length. The fish are silver hake. — To measure our fish we used the magnetized pointer. We lined up the fish’s head against the black backstop and stretched the body straight out. When we pressed the pointer against the end of the fish’s body an electrical circuit closed and the computer automatically recorded the fish’s length. The fish are silver hake.

We froze samples which we’d opened up for Mike and then one ungutted sample from each of the nine categories for the University of Maine. We did another CTD about 11:30 and deployed the net again. All did not go well this time. The sonar showed that the net was twisted and the opening blocked. The fishermen were called upon to bring it in and straighten it. The first thing they did was to take the two 400 pound chain weights off. Then they sent the net back out hoping it would straighten itself. Alas, they had to bring it in and send it out a couple more times as they manually untangled all the lines. It was very strenuous work and took them about 45 minutes. As a result we steamed about 3 miles past the point where we intended to fish.

We’ve sorted a smaller catch on the measuring board. We measured and weighed these fish, but never opened them to determine their sex. We did that only for herring. The scale is under the gray container on the right. We only had to press a button for the computer to record the weight. — We’ve sorted a smaller catch on the measuring board. We measured and weighed these fish, but never opened them to determine their sex. We did that only for herring. The scale is under the gray container on the right. We only had to press a button for the computer to record the weight

September 19, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 19, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 19, 2008

Weather Data from the Bridge
Latitude: 3624.8888 N Longitude: 12243.8013 W
Wind Direction: 261 (compass reading) SW
Wind Speed: 8.0 knots
Surface Temperature: 16.385

Figure indicating migration of different genetic stocks of Pacific leatherback turtles.

Science and Technology Log

Turtle Genetics
Peter Dutton is the turtle specialist on board, having studied sea turtles for 30 years. His research has taken him all over the tropical Pacific to collect samples, study behaviors and learn more about Dermochelys coriacea, the leatherback turtle. Mitochondrial DNA (is clonal=only one copy) is only inherited maternally (from the mother), so represents mother’s genetic information (DNA), while nuclear DNA has two copies, one inherited from the mother and the other from the father .By looking at the genetic fingerprint encoded in nuclear DNA it is possible to compare hatchling “DNA fingerprints”, with their mother’s and figure out what the father’s genetic contribution was. This paternity (father’s identifying DNA) analysis has produced some intriguing results.

Peter Dutton looking for turtles with the ‘big eyes’.

An analysis of chick embryos or hatchling DNA indicates all eggs were fertilized throughout the season from the same dad. It is thought that the female must store sperm in her reproductive system. Successively, throughout the nesting season, a female will lay several clutches, one clutch at a time. Females come in to the beach for a brief period (leatherbacks – approx 1.5 hrs) every 9-10 days to lay eggs for the 3 or 4 month nesting season (they lay up to 12). Sometimes it is the same beach; sometimes it is a beach nearby. Research done on other sea turtles is showing some species have actually produced offspring with other species of sea turtle. One example is of a hawksbill turtle with a loggerhead turtle in Brazil. In this case, the phenotype appeared to indicate one species, while the DNA analysis indicates the animal was a hybrid, with a copy of DNA from each of the two different species. At some point geneticists may need to re-define what constitutes a “species”.

The last few eggs most of the leatherback turtles lay are infertile, yolkless eggs. No one is certain about the function of these eggs, although several theories have been suggested. Many unknowns exist about these turtles. Scientists have not yet found a means to determine the age of individual sea turtles, so no one knows how long-lived they are. The early genetic research on leatherbacks showed some information that surprised the scientists. It had been thought that all leatherbacks foraging off the northwestern coast of USA originated in the eastern tropical Pacific, from nesting beaches in Mexico. Careful DNA analysis, however, found that animals at California foraging grounds are part of the western Pacific genetic stock recently identified by Dutton and colleagues. Both Peter and Scott have emphasized that there is still much to learn, and they have just begun, however, much has also been learned during the past six years, including the origin of leatherbacks that utilize California waters.

Personal Log

Yesterday the sun came out and it was a glorious evening. A group of us watched the sunset from the flying bridge, and then later watched the moon rise. It was spectacular, and with the ‘big eyes’, it was possible to see many of the moon’s craters. The stars were also magnificent! Today has been cloudy with a layer of fog eventually drenching the boat. This weather has made yesterdays blue skies all the sweeter.

Words of the Day

Mitochondrial DNA: DNA found within the mitochondria – originates from the mother; Clonal: identical to the original; Clutch: a single batch of eggs, laid together; Hybrid: one gene from one species and the second gene from a second species; Species: an organism that can mate with another of its own kind and produce fertile offspring.

Animals Seen Today

Common dolphin Delphinus delphis, Fin whale Balaenoptera physalus, Black-footed Albatross Phoebastria nigripes, Moon jellies Aurelia labiata, Sea nettle jellies Chrysaora fuscescens, and Common dolphins Delphinus delphis.

Questions of the Day

Geneticists are beginning to obtain new tools to figure out how similar animals are related to each other. What are some questions you have related to leatherback turtle genetics?
Scott’s turtle map shows that leatherbacks nesting in the Western Pacific migrate across the Pacific to the coast of North America, while leatherbacks that nest in Costa Rica only migrate to waters off the South American coast. Why might some populations stay in the same region, while others cross the Pacific Ocean?

September 18, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 18, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 18, 2008

Weather Data from the Bridge
Latitude: 3543.3896 N Longitude: 12408.3432 W
Wind Direction: 129 (compass reading) SE
Wind Speed: 7.8 knots
Surface Temperature: 17.545

Science and Technology Log

Today was an exciting one scientifically. The team has been examining all of the oceanographic data so far in order to pinpoint frontal edges for further data collection. They selected a point last night that might contain a biologically rich layer and hopefully, with jellies. After closely looking over every thing they have learned on this trip so far and plotting a destination to sample, we traveled to that station. We found an ocean water ‘river’ full of kelp, moon jellies, sea nettles and pelagic birds! It was exactly where the team predicted there might be a biotic stream!! This confirmed that offshore habitats can be found using oceanographic data and satellite imaging. There certainly were offshore areas that would give leatherbacks a chance to eat their fill. And through that period, the sun came up! With only a slight breeze, the flying deck was warm and relaxing. It put us all into excellent spirits.

Personal Log

Ray Capati shows off his Turtle Cake. (photo by Karin Forney) — Ray Capati shows off his Turtle Cake.

A few days ago, the chief steward made a cake- there are daily baked goods offered in the mess hall. This cake, however, was decorated for the LUTH Survey with turtles, kelp and jellyfish! Today would have been another good day for that treat. It is also time to get some pictures with C.J. our school mascot. He was pretty happy to get out and see the ship. He even tried to help up on the flying bridge, but without thumbs, it was hard for him to enter in observation comments.

Animals Seen Today
Moon jellies Aurelia labiata, Sea nettle jellies Chrysaora fuscescens, Salps Salpida spp., Sea gooseberries Pleurobrachia bachei, Red phalaropes Phalaropus fulicaria, Cuvier’s beaked whales Ziphius cavirostris, Common dolphins Delphinus delphis, Blue sharks Prionace glauca, and Arctic terns Sterna paradisaea.

Questions of the Day

What might be some oceanographic conditions that would create a water mass filled with kelp and jellyfish?
What other organisms (than we observed) might be attracted to such a water mass?

September 18, 2008April 2, 2021

Marilyn Frydrych, September 18, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 18, 2008

Weather Data from the Bridge
41.27 degrees N, 70.19 degrees W
Partly Cloudy
Wind out of the W at 19 knots
Dry Bulb Temperature: 26.0 degrees Celsius
Wet Bulb Temperature: 20.9 degrees Celsius
Waves: 9 feet
Visibility: 10 miles
Sea Surface Temperature: 21.6 degrees Celsius

Science and Technology Log

We suspended operations. The seas were from 8 to 9 feet for the next day and a half. Conditions were unsafe for the fishermen to work. Everyone spent the day reading, playing board games, watching movies, or typing on the three computers provided for everyone’s use. Erin Earley, the engineer wiper, took the opportunity to show Jacquie and me the engine room. She took us through all the portals marked, “Do Not Enter”. They all had ladders under them leading to the bowels of the ship. The engine area was compartmentalized and was entered from different spots from above. Erin showed us the ubiquitous colored handles which turned the various valves on and off.

There were yellow handles for transmission oil pipes, green for seawater, orange for hydraulic fluid, red for emergency fire hose water, blue for drinking water, and brown for engine oil. We headed down under the galley where we passed next to the 12-cylinder Detroit Diesel engine which powered the screw. It was about ten times the size of a good-sized pickup engine. Erin explained the importance of placing all this heavy machinery so that the weight is evenly distributed within the ship. The engine being so heavy is usually near the center of the ship. This necessitates a huge long drive shaft connecting it to the screw. The drive shaft, spinning away at high speed, was out in the open just under and alongside the catwalk. One slip would be catastrophic. Most of what we saw was large 5’ by 5’ or larger rectangular tanks for fuel, distilled water, black water, gray water, and used oil. The black water from the toilets is stored in a tank with “bugs” or a bacteria in it which eat the refuse and in effect clean up the water. The gray water is from the sinks and showers and contains soap which kills the bugs. The gray water has to be saved in tanks separate from the black water. All this is dumped into the sea in designated areas. Only the used oil is saved to be offloaded back at the dock.

Erin Earley pointing out hydraulic fluid pipes.

We saw two workshop areas, a storeroom with all the parts that might be needed for any possible repair, an extra emergency generator, and the Engine Control Room (CERC), where Engineer Chris O’Keefe was standing watch. The CERC room contained all the gauges to monitor all the engine systems. By the end of the tour Jacquie and I were totally impressed with how clean and organized everything was and how much knowledge the engineers needed. The four of them had to be experts in heating and cooling, in welding, in diesel engine repair, in electrical repairs, and hydraulics. Each of them had either mastered these fields or was in an apprenticeship with that as their goal. Usually people master one of these fields in a lifetime. We were also impressed with how many safety features were built in everywhere. It seemed everywhere we went there were three foot CO2 bottles which would automatically spray everywhere if a fire were to occur.

Personal Log

Sleeping was difficult for me that evening. I did succumb to seasickness Friday morning, but was fine after downing a sea sickness pill. We frittered away the rest of the day. Robert Gamble, second scientist under Mike Jech, got out his game called Hive and taught three or four of us how to play. Otherwise I read, did Sudoku, rode the exercise bike, and ate.

The food was tremendously good. All of it was prepared from scratch. The two cooks were at least four star cooks. They not only cooked, they also cleaned up their own mess, did the dishes, and cleaned up the dining area. They appeared the hardest workers on board. For both lunch and dinner they prepared two entrees, three veggies, homemade soup, and two salads. They baked two luscious desserts as well. So far we have sampled lamb chops, salmon, lobster bisque, crab ravioli, pork chops with a luscious applesauce, and grilled swordfish.

September 17, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 17, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 17, 2008

Weather Data from the Bridge
Latitude: 3614.8661 W Longitude: 12402.7415 N
Wind Direction: 190 (compass reading) SW
Wind Speed: 2.1 knots
Surface Temperature: 15.230

Science and Technology Log

Above is a spreadsheet of some of the Chrysaora fuscescens data that was collected on September 15. The first trawl was at 4:48 pm, the second at 6:39 pm and the third at 8:20 pm. A fourth trawl was deployed at 10:49 pm. A total of 204 jellies were sorted and measured. Of these, the first 7jellies measured from trawl numbers’ 46, 47 and 48 are recorded above. All of the species in this data set are Chrysaora fuscescens. Using the spreadsheet, create a graph that compares mass to length for these 21 animals. When you believe you have completed this, answer the questions listed below.

Questions:

Is your graph complete?
Check to see if you have included; all units-mass in kilograms, length in millimeters; a legend that includes the code of the points; title for each axis(length of jelly in millimeters, mass of jelly in kilograms); title for graph.
Did you make a scatter plot, bar graph or line graph? The best choice would be a scatter plot, this may give an indication of patterns in the relationship between length and mass.
Can you see any pattern? Is there a relationship between mass and length? This would be indicated by a linear pattern in the points?
Do there appear to be any points that do not fit a general pattern? What might cause these points that do not fit the norm to exist?
Compare your graph with the one shown below, generated by the computer.

These Chrysaora fuscescens were caught in “jelly lane”, in the waters near Pacifica, CA that are known to have large jelly populations. It is also an area known for leatherback sightings because of this food source. A great deal of information is known about the oceanographic conditions in this near-shore habitat. The reason the LUTH survey is crisscrossing off the continental shelf, is that much less is known about deeper offshore waters as a potential food source for migrating leatherbacks. The routes they travel on must have some food available, so we are working to find out where that is, and gain information about relationships to oceanographic variables so that researchers will be able to eventually estimate where that food is using satellite images that will be translated into jellyfish habitat.

Chico Gomez and Scott Benson sorting jellies.

Personal Log

There was quite a bit of excitement today up on the flying bridge. Although we were traveling out beyond the continental shelf, we moved over a front of water that had an abundance of moon jellies. It was unexpected and the scientific team became very excited. New plans were made based on this observation and a decision was made to cross back across the front and collect temperature data within the water column every 10 minutes. Quantitative observations were made of all jellies seen port and starboard and a net trawl was deployed at one point along the zone of interest. It was quite a day. We also spotted blue sharks, ocean sunfish, and a swordfish jumping. It was a good day.

Animals Seen Today

Extracting stomach contents from large C. fuscescens

Sooty shearwater Puffinus griseus
Sea nettle jellies Chrysaora fuscescens
Moon jellies Aurelia aurita
Northern Fur seal Callorhinus ursinus
Elephant seal Mirounga angustirostris
Swordfish Xiphias gladius
Blue shark Prionace glauca
Buller’s shearwater Puffinus bulleri
Ocean sunfish Mola mola
Rhinoceros auklet Cererhinca monocerata
Black-footed Albatross
Phoebastria nigripes

Questions of the Day

What might be possible reasons the scientific team was excited at finding jellyfish out beyond the continental shelf?
The weather has been very calm and mostly overcast. One of the officers told me he would much rather have those conditions, than windy and sunny. What effect might wind have on a sturdy, ocean-going ship?

Sunset seen from flying bridge, the first sunset we’ve seen on this leg.

September 17, 2008April 2, 2021

Marilyn Frydrych, September 17, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters

Date: September 17, 2008

Weather Data from the Bridge
41.27 degrees N, 70.19 degrees W
Partly Cloudy
Wind out of the W at 19 knots
Dry Bulb Temperature: 26.0 degrees Celsius
Wet Bulb Temperature: 20.9 degrees Celsius
Waves: 2 feet
Visibility: 10 miles
Sea Surface Temperature: 21.6 degrees Celsius

Science and Technology Log

The third day out was much like the second day. Our first job was to fish with the big net. This time the chief scientist wanted to know what some small vertical echoes on the echogram were. He guessed that they were shrimp or krill. The acoustic echogram used three frequencies: 18 kHz, 38 kHz, and 120 kHz. If dots appeared in all three then he was pretty sure it was fish and most likely herring. These particular vertical dots appeared only in the 18 kHz echogram. He guessed they were very small fish, but wanted to determine if the signature belonged to opening were huge metal doors. They looked like doors, but in fact never closed. They were actually more like the front edge of an airplane wing. Their purpose was to stay parallel to each other and keep the net open. The net was rolled up on a large roller, which sat at the center back of the fantail. It was about 250 ft long. When it was time to deploy, the fishermen used a winch to unwind the net. The person at the helm had to be extremely careful that the boat kept at a steady headway of about 3 to 4 knots. The doors were stored at the very end of the stern. With the help of their own hydraulic winches they were lifted to a spot where they could be attached to the net. There was a place on each side of the net where the side wire changed to a chain link. The metal doors were clasped on these links and then dragged into the sea. Another link in the wire was for heavy chains. Their weight of about 400 pounds each held the sides of the net down.

Fishermen setting up the recorder which is sent outwith the net. — Fishermen setting up the recorder sent outwith the net.

The night crew, on from 6:00 pm to 6:00 am were busy Wednesday night and on into the morning. They did two CTD’s and three net deployments. They left us about 50 herring and silver hake to observe in the morning. Richie Logan, one of the fishermen, used these to write a birthday note to his daughter. Here’s his picture. Each time we sent out a net we were hoping for about half a clothes basketful of fish. Last night they filled 30 baskets. Only about 1/3 of a basket is ever measured and weighed. The rest are tossed back. Our chief scientist said he can remember processing enough to fill 60 baskets. So far most of the biomass in the basket has been krill. Mixed in with the krill are small anthropoids maybe a half inch square, jelly fish about twice that size, Illex squid from 2 to 6 inches long, baby silver hake, butterfish, or red hake. These last three are all in the neighborhood of 1 inch long.

This morning we pulled up a lamprey eel about 2 feet long and a couple two inch lumpfish in the evening. Most of the fish were dead when we got to them. We had to wait until the fishermen were totally finished with winding the net and had dumped the net’s contents onto the deck before we were allowed on the fantail. Then we sorted the large fish into clothes baskets and the smaller ones into small trays. Wednesday Jacquie Ostrom, another volunteer from Colorado Springs, noticed that two 3-inch lumpfish were moving. She added some water to our rectangular sorting pan and a piece of clear hard plastic we had thought was some molt or litter also started to move. No one seemed to know what the “plastic” was. After a quick reference to the Internet we learned it was the larva of the spiny lobster.

Richie Logan making a Happy Birthday email for his daughter.

Personal Log

We must have passed by the north-south migration path of the whales. We didn’t spot any today. The work load is really light compared with teaching. We work two or three hours cataloguing the catch after each trawl, clean up with the saltwater deck hose, and then wait for the next trawl maybe three or four hours later. A 20 minute CTD deployment every now and then is the only other work we are expected to do. The cruise is turning out to be very relaxing. I spend quite a bit of time just staring out at the sea, immersing myself in its gentle rhythm.

Seven basketsful of herring from a haul in the deep waters near Georges Bank.

The piece of “plastic” turned out to be the larva of a spiny lobster.

September 16, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 16, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 16, 2008

Weather Data from the Bridge
Latitude: 3720.718 N Longitude: 12230.301
Wind Direction: 69 (compass reading) NW
Wind Speed: 12.0 knots
Surface Temperature: 15.056

Scott measures a moon jelly as Amy records data.

Science and Technology Log

The LUTH Survey is a collaborative effort to gather as much oceanographic data from this small part of the Pacific Ocean as possible. Although the primary objective is to characterize this area for its potential as leatherback habitat, it is also an opportunity for other scientists to gather data that reinforces their studies. Everyone on this cruise, aside from myself, is employed by the National Oceanographic and Atmospheric Administration’s National Marine Fisheries Service. The regional area that this group works in is the Southwest Fisheries Science Center. There are nine scientists who have very different specializations. The following flow chart outlines how each department is related to the others.

Crewmembers practice suction cup tagging of leatherbacks from a Rigid Hull Inflatable Boat (RHIB).

Every division is focused on different aspects of oceanography. Scott Benson is our chief scientist and leatherback specialist. Karin Forney is the research biologist on the team whose expertise is marine mammals and regulations out to the limit of United States waters. This limit is the EEZ – Exclusive Economic Zone – and extends for 200 miles west of the coast. Peter Dutton is currently the leader of the Marine Turtle Genetics Program, here to gain additional insight into foraging habitats of the leatherback. Liz Zele, oceanographer, and Justin Garver as oceanography intern, manage the collection and processing of oceanographic data from the CTDs and XBTs. Steven Bograd is supporting the data collection as a research oceanographer. Both George (Randy) Cutter and Juan Zwolinski collect and interpret the acoustic data. Randy’s area of expertise is with fisheries acoustics, seafloor mapping and autonomous underwater vehicles. Juan’s specialty is in acoustic estimation of small pelagic fish. Amy Hapeman is aboard as a permit analyst to gain a better understanding of how the science data are collected. Together, this dynamic group will work to put together a better picture of what habitat might be available to leatherback turtles here off the continental shelf of California. They are all excited to be here, greatly enjoy their professions, and hope to assist in leatherback turtle protection.

Justin prepares to collect head and organs for research.

The night of September 13, a few members of the research team, with assistance from crewmembers, took advantage of the relatively warm water the Jordan was crossing and tried to fish for squid. Not really expecting much more than a short fight with a 12 inch mollusk, we were in for a surprise. Using a fluorescent lure, and a 50lb test, the line was dropped about 200m into the dark sea. Within 5 minutes, the line began to tug, and tug, AND TUG!! The oceanographer/fisher used a tremendous amount of strength to reel in the organism on the other end of the line. Victor, crewmember and experienced squid fisher, gaffed the squid as soon as it surfaced in the water. Shock was on every face as we acknowledged we were not expecting a 65cm long, 30-40lb animal! As soon as the tentacles that it grabbed the lure with were detached from the lure, Justin was ready to go again! And within 5 minutes another squid was caught, easily the same size as the first. This brought another three scientists and one crewmember out with additional reels.

Two Humboldt squid fresh from the Pacific!

Within an hour, eight squid were aboard, plans were made for a calamari feast and measuring began. Karin Forney, after observing the commotion, quickly retrieved an email from a colleague who is conducting research on this species of squid, and who requested that we preserve the head and internal organs for later genetic analysis. Several Ziplock bags were readied and the cleaning began. In the end there were calamari steaks for everyone and their 10 best friends, tentacles for several pots of soup and research samples collected for additional analysis. This species of squid is of concern since it had been uncommon off the central California coast until after the 1998 El Nino event, which brought warm waters up from the tropical Pacific side. Now it is much more abundant. The Humboldt squid is a voracious predator and there is great interest in understanding its potential impact on other species, especially those of commercial value.

Randy and Mary Anne cleaning Humboldt Squid.

Animals Seen Today
Blue shark Prionace glauca, Humboldt squid Dosidicus gigas, Arctic tern Sterna paradisaea, and Common redpoll Carduelis flammea.

Words of the Day
Gaff: hook attached to a long pole used to bring in a catch Characterize: to decide what the parts are that together create something Acoustic: sound wave information El Nino: a cyclic climate event originating in the tropical Pacific that is associated with unusually warm waters that impact the west coast of North and South America.

Joao preparing his secret calamari marinade.

Questions of the Day

A squid is classified as a mollusk, which is a single shelled marine animal. Where is the single shell on this animal?
What are some of the reasons the study of leatherback turtles is so complex?

September 16, 2008April 2, 2021

Marilyn Frydrych, September 16, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 16, 2008

The Newston net hanging from a pulley on the A-frame

Weather Data from the Bridge
41.27 degrees N, 70.19 degrees W
Partly Cloudy
Wind out of the W at 19 knots
Dry Bulb Temperature: 26.0 degrees Celsius
Wet Bulb Temperature: 20.9 degrees Celsius
Waves: 2 feet
Visibility: 10 miles
Sea Surface Temperature: 21.6 degrees Celsius

Science and Technology Log

Today started slowly since we were still in transit to our starting position. All morning there were 15 to 20 terns and gulls flying nearby. Occasionally we’d spot land birds. A small yellow-rumped warbler actually flew into the dry lab area of the boat. It was far from where it belonged and probably wouldn’t make it back. The terns skimmed the water surface, but never actually seemed to touch the water. Our bird scientists, Marie-Caroline Martin and Timothy White, decided they would deploy a Newston net to try to determine what the birds were eating. The fishermen, who do all the deploying of instruments, hung the net from the A-frame pulley on the starboard side and swung it out over the water. For 20 minutes it bounced in and out of the water never getting more than a foot or so above or below the surface. The Neuston fine mesh net is about 10 feet long and has a mouth about 4 feet by 2 feet.

Jim Pontz, a fisherman, working the A-frame.

When the fishermen brought it in, it mostly held salp and jellyfish, but also some small crustaceans which looked like miniature shrimp about 1/2 in. long. The jellyfish were small, without stingers. Marie carefully washed the contents of the net down to its opening with a salt water hose. Then she used her unprotected hands to slide her catch into a glass jar about the size of a medium peanut butter jar. She graciously separated a few of the crustaceans for us to observe. About 11:30 a.m. we finally reached our starting point. The plan was to do parallel north-south transects. We would cross the east-west transects without stopping . We fished with a huge net off the stern. The chief scientist, Dr Michael Jech, decided when to fish. Sometimes he put the net in to prove that there were no herring there and the echoes he was receiving were correct. Other times he saw a new signature on the screen and checked to see what it might have been. Still other times he recognized the herring signature (he’s about 90% accurate) and fished to determine sizes, sexes, and stomach content. At other times he had predetermined stations where fishing had been good in the past.

A herring in a clothes basket. Note the brilliant blue stripe on top.

At each 90 degree turn we deployed a CTD – conductivity, temperature, and depth instrument. The instrument measured how easily electricity can flow through the seawater, its conductivity. From this and the temperature and pressure (or depth) the salinity of the water can be determined. The equations involve the 5^th power of both temperature and pressure. They appear to be Taylor’s series approximations. The CTD is also used to calculate the speed of sound which is important for the accuracy of the sonar equipment. Only the crew may actually deploy instruments. None of the scientists touch the instruments going over the side. The scientific crew’s job was to communicate via a handheld radio with the fishermen working the winch and the one putting the instrument into the water. We told them when to start after we had initialized the computer programs and when to haul back the CTD as it came within a few feet of the ocean bottom. We could simultaneously look at a cam on a nearby monitor showing what was happening at the A frame. I watched the first time this was done, but with everyone’s help soon caught on and was doing it myself.

Jacquie Ostrom at her post radioing the fishermen when to start the CTD

The second time I helped with the CTD we attached a Niskin water bottle to the bottom of the CTD and signaled to have it stopped about half way back up the ever present bottom layer isotherm. We paused for about a minute as it filled with the surrounding water. At that point both ends were wide open. A fisherman dropped a messenger, a heavy round metal doughnut, down the line to the bottle. It tripped a lever which then allowed the lids connected with tremendously strong elastic bands to snap shut. The tube is a little larger than a 2-liter soda bottle. When we were given the retrieved bottle, we washed out a small, maybe 1-cup, bottle 3 times with the seawater from the Niskin bottle before we filled and capped it and replaced it in its position in a crate. The water can be used to calibrate the salinity readings the CTD recorded and to determine various other chemicals at that spot of collection in the ocean.

Sunset silhouetting the CTD bottle balancing against one arm of the A-frame.

Personal Log

Today being the first full day at sea I was introduced to a wonderful daily ritual. Each morning at about 10:30 the chiefs brought out from the oven their first baked dessert of the day. Today’s was the most perfectly seasoned peach cobbler I’ve ever tasted. Once toward evening we spotted dolphins around the ship. We could occasionally see them jumping through the air. A pair played in the bow wake for a short while. About the same time the crew pointed out to us some three or four pilot whales about 100 yards off the starboard stern. I hadn’t expected to see so much sea life. This is turning into a very memorable adventure.

September 15, 2008April 2, 2021

Marilyn Frydrych, September 15, 2008

NOAA Teacher at Sea
Marilyn Frydrych
Onboard NOAA Ship Delaware II
September 15-25, 2008

Mission: Atlantic Herring Hydroacoustic Survey
Geographical area of cruise: New England Coastal Waters
Date: September 15, 2008

The Delaware II (Photo courtesy Jacquie Ostram)

Weather Data from the Bridge
41.27 degrees N, 70.19 degrees W
Partly Cloudy
Wind out of the W at 19 knots
Dry Bulb Temperature: 26.0 degrees Celsius
Wet Bulb Temperature: 20.9 degrees Celsius
Waves: 2 feet
Visibility: 10 miles
Sea Surface Temperature: 21.6 degrees Celsius

Science and Technology Log

The purpose of my trip on the Delaware II was to find interesting venues for presenting various math lessons to students at Pikes Peak Community College where I teach and to students of different grades and ages at the K-12 public schools in Colorado Springs. We left on time yesterday, though I was unaware of the departure. I had been busy unpacking my things and making my bed. Then I decided to learn my way around the boat. I happened to look through a porthole and noticed we were about 25 yards from the peer. The NOAA Corps officer, ENS Charlene Felkley, taking us out had used the bow thruster to move us away from the dock. It was so smooth that I hadn’t noticed any movement. I thought that strange considering the size of the Delaware 2. We steamed all day toward our station about 250 miles east of Cape Cod.

NOAA’s dock at Woods Hole, Massachusetts

After we were out of the channel we started our drills. We’d all been given a station billet stating where our stations were for emergencies. The first was a fire drill followed by an abandon ship drill. I started to my station at the stern for the fire drill, but one of the engineers redirected me to the bow stating that the fire was in the stern. About 15 of us gathered in the bow. We had all carried our survival suit, life vest, long sleeve shirt, hat and gloves, and anything we thought we might need. I brought as extras my sunglasses and a bottle of water. When we were dismissed, about 15 minutes later after the officers and crew had practiced using the fire hoses by spaying over the side of the boat, we proceeded to the stern where those of us who had not been on the last cruise dressed in our survival suits. I soon learned that the easiest way to put on a survival suit is to stretch the legs and boots out on the deck, sit down in its middle, draw its legs onto your legs, stand up and finish with the upper body. Pulling the zipper up proved quite difficult. The hood enveloped my face and I could feel its suction. The suit is designed to keep the cold water away from your body. It was well insulated but still in icy cold waters would only protect you for about an hour.

Personal Log

That evening we spotted some whales spouting. It was migration time so we must have been crossing their path as they headed south. We were told they were probably humpback whales because of their size and the shape of their spouts. I saw a couple fins, but mostly just their massive bodies surfacing. I learned about “fin prints” the spot where their fin flattens the water. The little ripples, prevalent everywhere on the ocean’s surface, seem to be smoothed out at the spot where the fin hits the water. These areas were about 6 ft by 4 ft and glistened smooth in the setting sun. We watched spout after spout for about 2 hours.

Our four bunk room. Debbie Durate on the night shift and Jacquie Ostrom and I on the day shift shared this room. It was understood we were not to return to the room any time during our 12 hour shift. The shower is behind the sink and not much wider.

Robert Gambel, scientist, standing in front of our fishing net ready to put on his survival suit

September 15, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 15, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 15, 2008

Weather Data from the Bridge
Latitude: 3720.718 N Longitude: 12230.301
Wind Direction: 69 (compass reading) NW
Wind Speed: 12.0 knots
Surface Temperature: 15.056

Computer generated images showing acoustic scattering during the day

Science and Technology Log

A lot of physical science is involved in oceanographic research. An understanding of wave mechanics is utilized to obtain sonar readings. This means that sound waves of certain frequencies are emitted from a source. The concepts to understand in order to utilize acoustic readings are:

Sound and electromagnetic waves travel in a straight line from their source and are reflected when they contact an object they cannot pass through.
Frequency is defined as the number of waves that pass a given point per second (or another set period of time). The faster the wave travels, the greater the number of waves that go past a point in that time. Waves with a high frequency are moving faster than those with a low frequency. Those waves travel out in a straight line until they contact an object of a density that causes them to reflect back.
The speed with which the waves return, along with the wavelength they were sent at, gives a ‘shadow’ of how dense the object is that reflected the wave, and gives an indication of the distance that object is from the wave source (echo sounder). As jellyfish, zooplankton and other organisms are brought up either with the bongo net or the trawl net, examinations of the acoustic readings are done to begin to match the readings with organisms in the area at the time of the readings. On the first leg of the survey, there were acoustic patterns that appeared to match conditions that are known to be favorable to jellyfish. Turtle researchers have, for years, observed certain characteristics of stretches of ocean water that have been associated with sea nettle, ocean sunfish and leatherbacks. Now, by combining acoustic readings, salinity, temperature and chlorophyll measurements, scientists can determine what the exact oceanographic features are that make up ‘turtle water’.

Computer generated images showing acoustic scattering at night. — Computer images of acoustic scattering at night.

Acoustic data, consisting of the returns of pulses of sound from targets in the water column, is now used routinely to determine fish distribution and abundance, for commercial fishing and scientific research. This type of data has begun to be used to quantify the biomass and distribution of zooplankton and micronekton. Sound waves are continuously emitted from the ship down to the ocean floor. Four frequencies of waves are transmitted from the echo-sounder. The data is retrieved and converted into computerized images. Both photo 1 and photo 2 give the acoustic readings. The “Y” axis is depth down to different depths, depending on the location. The frequencies shown are as follows for the four charts on the computer screen; top left is 38kHz, bottom left is 70 kHz, top right is 120kHz and bottom right is 200 kHz. In general the higher frequencies will pick up the smallest particles (organisms) while the lowest reflect off the largest objects. Photo 1 shows a deep-water set of images, with small organisms near the surface. This matches the fact that zooplankton rise close to the surface at night. Photo 2 gives a daylight reading.

A Leach’s storm petrel rests on the trawl net container.

It is more difficult to interpret. The upper one-fourth is the acoustic reading and the first distinct horizontal line from the top represents the ocean floor. Images below that line are the result of the waves bouncing back and forth, giving a shadow reading. But the team here was very excited: for this set of images shows an abundance of organisms very near the surface. And the trawl that was deployed at that time resulted in lots and lots of jellyfish. They matched. Periodically, as the acoustic data is collected, samples are also collected at various depths to ‘ground truth’ the readings. This also allows the scientists to refine their interpretations of the measurements. The technology now can give estimates of size, movement and acoustic properties of individual planktonic organisms, along with those of fish and marine mammals. Acoustic data is used to map the distribution of jellyfish and estimate the abundance in this region. By examining many acoustic readings and jellyfish netted, the scientists will be able to identify the acoustic pattern from jellyfish.

Karin releases a petrel from nets he flew into.

The sensor for the acoustic equipment is mounted into the hull, with readings taken continually. Background noise from the ship must be accounted for, along with other types of background noise. Some events observed on board, such as a school of dolphins being sighted, can be correlated (matched) to acoustic readings aboard the ship. Since it is assumed that only a portion of the dolphins in a pod are actually sighted, with the remaining under the surface, the acoustic correlation gives an indication of population size in the pod. The goal of continued acoustic analysis is to be able to monitor long term changes in zooplankton or micronekton biomass. This monitoring can then lead to understanding the migration, feeding strategies and monitor changes in populations of marine species.

A Wilson’s warbler rests on the flying deck.

Personal Log

Several small birds have stopped in over the week, taking refuge on the Jordan. Many bird species make long migrations, often at high altitude, along the Pacific flyway. Some will die of exhaustion along the way, or starvation, and some get blown off their original course. Most ships out at sea appear to be an island, a refuge for tired birds to land on. They may stay for a day, a week, or longer. Their preferred food source may not be available however, and some do not survive on board. Some die because they are just too tired, or perhaps ill, or for unknown reasons. We have had a few birds, and some have disappeared after two days. We hope they took off to finish their trip. Since we were in site of land all day today, it could be the dark junco headed to shore. ‘Our’ common redpoll did not survive, so he was ‘buried at sea’, with a little ceremony. About half an hour ago, a stormy petrel came aboard. He did not seem well, but after a bit of rest, we watched him take off. We wish him well.

Words of the Day

Acoustic data: sound waves (sonar) of certain frequencies that are sent out and bounce off objects, with the speed of return an indication of the objects distance from the origin; Echo sounder: device that emits sonar or acoustic waves Dense or density: how highly packed an object is measured as mass/volume; Distribution: the number and kind of organisms in an area; Biomass: the combined mass of a sample of living organisms; Micronekton: free swimming small organisms; Zooplankton: small organisms that move with the current; Pacific flyway: a general area over and next to the Pacific ocean that some species of birds migrate along.

Animals Seen Today
Leach’s Storm-petrel Oceanodroma leucorhoa
Herring gull Larus argentatus
Heermann’s gull Larus heermanni
Common murr Uria aalge
Humpback whale Megapterea novaeangliae
California sea lion Zalophus californianus
Sooty shearwater Puffinus griseus
Brown pelican Pelecanus occidentalis
Harbor seal Phoca vitulina
Sea nettle jellies Chrysaora fuscescens
Moon jellies Aurelia aurita
Egg yolk jellies Phacellophora camtschatica

Questions of the Day
Try this experiment to test sound waves. Get two bricks or two, 4 inch pieces of 2 x 4 wood blocks. Stand 50 ft opposite a classroom wall, and clap the boards together. Have others stand at the wall so they can see when you clap. Listen for an echo. Keep moving away and periodically clap again. At some distance, the sound of the clap will hit their ears after you actually finish clapping. With enough distance, the clap will actually be heard after your hands have been brought back out after coming together.

Can you calculate the speed of the sound wave that you generated?
Under what conditions might that speed be changed?
Would weather conditions, which might change the amount of moisture in the air, change the speed?

September 13, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 13, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 13, 2008

Weather Data from the Bridge
Latitude: 3645.9407 N Longitude: 12501.4783 W
Wind Direction: 344(compass reading) NE
Wind Speed: 13.5 knots
Surface Temperature: 14.197

Computer generated map of sampling area using satellite and in situ data. The satellite image on the right includes land (white) on the right edge, of the area between San Francisco and San Luis Obispo.

Science and Technology Log

As the scientific team conducts its research locating areas where jellyfish congregate, they have determined that samples need to be taken along both sides of a warm water/cold water boundary. The charts below comprise a computer-generated chart of water temperature in the area we are focusing on. The chart on the right was created from remotely sensed data obtained from a satellite, and a small square of that is enlarged on the left. The chart on the left is produced from a computer model that smoothes out the lines and includes data taken continuously from the ship and integrated into the chart. Although hard to read at this resolution, the legend shows where CTD’s have been deployed, along with XBT’s, which record temperature. It also marks where upcoming deployments will take place. Net trawls were also deployed to collect samples of jellyfish that might be in the region. The quest is on for good turtle habitat.

After examining these charts above, please answer the following questions:

What can you tell about the temperature of the water just off the coastline for most of that area of California?
What range temperature of water does it appear that the LUTH survey is currently sampling in?
Would you expect to find the same organisms in each of the samples? Why or why not?
What might cause temperatures to be different in some parts of the ocean?

The Expendable Bathy Thermograph (XBT), consists of a long copper wire shot into the water down to 760 m. When kept in the water for 2 minutes, the cable registers a signal to a dedicated computer, giving temperature readings along the wire, which are immediately plotted onto a graph.

After looking at this graph, answer the following questions:

What temperature is measured at the surface?
At what depth below the surface does the temperature start to drop dramatically? How many degrees Celsius is the drop?
How many more degrees does the temperature drop, after the initial quick decrease? In how many meters does this gradual drop occur?

The LUTH survey is very interested in finding out whether jellyfish are found in the colder water (yellow and green), and how the distribution changes through the changing temperature of the water. Their questions surround what conditions would allow leatherbacks to travel along certain routes to and from the California coast, and how to identify areas of productivity so that commercial fishing can occur without harming protected species. Every jellyfish caught, either by the net trawls or the bongo net, and oceanographic data collected at the same time, provides more insight into where favorable conditions might exist.

Personal Log

Computer generated graph of XBT data from 8/28/08 at 18:15:30 (6:15 pm)

It is a very different lifestyle to have a profession that involves living for periods of time aboard a ship. Most of us land-based folks get up, wander through the house, eventually rounding up food and heading off to school or work. For me, after a day full of movement all over Chico Junior High’s large school grounds, I may go to the store, run errands and then return home to read the paper, clean house, and prepare dinner. My family will eventually arrive home and we will go over the day’s events. Here, the crew spends up to 23 days in this home, office and recreational area, away from their families. Two cooks prepare, serve buffet-style and clean up after all meals; serving at 7am, 11am and 5pm. During off hours, I have observed T.V. or movie watching, card games in action and some gym use.

Many people have iPods and in some areas music is broadcast. Personal computers with satellite internet capabilities are used, I assume, to communicate with friends and family on land. It is interesting that the ‘living room’, which is also the mess hall, may have 10 colleagues in it sometimes watching a show. I am used to cooking when I choose, or just making cookies if I want or heading outside to jog with my dog after school. No such activities like that happen here. Every one in the crew seems to get along, is extremely polite to each other, and is also very pleasant. It takes a very flexible person to enjoy living on a ship and a certainly love for the ocean. I am enjoying this very different way of living, and will also enjoy when I can run a few miles through the park again.

Animals Seen Today
Sea nettle jellies Chrysaora fuscescens
Comb jellies Kiyohimea spp.
Sea gooseberry Pleurobrachia bachei
Common dolphins Delphinus delphis
Jack mackerel Trachurus symmetricus
Wilson’s warbler Wilsonia citrine
Yellow-rumped warbler Dendroica coronata

Questions for the Day
1. What part of your regular pattern would be easiest to give up, if you were to live aboard a ship? Which parts would be hardest?

September 11, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 11, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 11, 2008

Weather Data from the Bridge
Latitude: 3647.6130 W Longitude: 12353.1622 N
Wind Direction: 56 (compass reading) NE
Wind Speed: 25.7 knots
Surface Temperature: 15.295

Science and Technology Log

One important piece of equipment on many NOAA research ships is the CTD (Conductivity and Temperature with Depth). This eight chambered water collection device is attached to electronic sensors. When the CTD is deployed below the ocean’s surface, it is dropped carefully to a predetermined depth; today’s was 500 m. All water collection chambers are open for water to flow through. After the oceanographer in charge of deployment examines a computer readout of the CTD after it has been lowered to its’ maximum depth, it is decided at which depths water samples will be collected as the CTD is brought back up.At these intervals, water sample collectors (Niskin bottles) are closed and water collected. Up to eight samples are collected as it rises to the surface.

CTD reading; salinity, oxygen, pressure, and fluorometer voltage — CTD reading: salinity, oxygen, pressure, and voltage

After the CTD has been secured on deck, each sample is carefully extracted into collection bottles. Each water sample is filtered through a vacuum system in order to extract chlorophyll from that water sample. The extracted chlorophyll is later run through a fluorometer, which calculates the volume of chlorophyll a and chlorophyll b which indicates the intensity of photosynthetic microorganisms in that layer. Lots of chlorophyll indicates a rich biological region, which may support many types of marine life. In addition, the CTD collects samples that will be analyzed for the amount of salts they contain in order to confirm the sensors values. Values that change to the left are decreasing. The reading on the top right shows how the temperature, in red, changes very quickly from the surface down to 500 m. The green indicates some chlorophyll until it drops significantly below 100 m, where light no longer penetrates well. Oxygen levels are in blue, also decreasing with depth.

Questions of the Day

What is the importance of chlorophyll to marine mammals and amphibians?
Why is an understanding of how pressure and depth below the ocean’s surface are related critical to marine sciences?

Water samples being filtered through a vacuum system to extract chlorophyll.

September 11, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 11, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 11, 2008

Weather Data from the Bridge
Latitude: 3647.6130W Longitude: 12353.1622 N
Wind Direction: 56 (compass reading) NE
Wind Speed: 25.7 knots
Surface Temperature: 15.295

Bongo net being deployed to collect specimens

Science and Technology Log

One oceanographic phenomena of interest is the deep scattering layer (DSL). This is a zooplankton and micronekton rich layer that is found below the depth that light penetrates to in the daytime. After sunset, this DSL layer migrates up closer to the surface. In some locations the daytime DSL may be at a depth of 225-250 m depth in this area of the California current ecosystem, and 0-100 m during the night. It is hypothesized that the organisms stay deeper down during the daytime to avoid predation, and move up toward the surface at night when it is safer from predators. Oceanographers take advantage of this information. Every evening, two hours after sunset, bongo nets are deployed to a depth of 200m and then slowly brought to the surface to get a sample of the entire water column. The purpose is to collect samples of those organisms that are found in the DSL. During the day these organisms would be much deeper down below the surface, but at night they are much closer.

Chart that converts wire length and angle to depth

The process begins with opening up the large plankton nets and attaching a weight in between the loops of the frame. The frame is hooked to a cable that is maneuvered by a winch operator. After the bongo net is swung out from the ship, a large protractor, an inclinometer, is attached. This is used to give the Officer of the Deck (OOD) driving on the bridge an indication of speed needed to deploy the net at. The OOD adjusts the speed of the ship to maintain the required angle, which allows the net to remain open for collection and reach the desired depth. Looking at the chart above, you can see that the angle the wire is deployed at, along with the amount of wire paid out, can be converted to a given depth. Trigonometry at work. There is also a flow meter attached inside each of the bongo loops. The readings from this give an indication of the volume of water that passed through the nets. When the bongo is retrieved, before the end is detached, each net is rinsed with salt water from a hose in order to retrieve as much of the sample as possible in the cod end. This end is detached and brought into the lab. One of the samples is examined in the lab, for relative types, while the other sample is preserved in formaldehyde and sodium borate for later examination and identification.

Personal Log

It is very interesting being rocked to sleep each night. Being on the top bunk, I am about 2 feet from the ceiling, with several pipes suspended from the ceiling. Once settled in bed, there is little opportunity to move around much. But being slowly rocked from side to side is a very interesting sensation, and is relaxing. It is becoming easier to tell how calm the water is that the ship is moving through, or a little about the weather, since sometimes we rock up and down, instead of from side to side. We were told that when it gets really rough it is a good idea to place a life jacket under the edge of the mattress to keep us from falling out. Each bed has a dark curtain edging it, since many of the crew and scientists may have opposite shifts. Since there is no porthole in my stateroom, when the lights are out and the curtain is closed, it is very dark. It would be impossible to tell night from day, except by an internal clock or a timepiece. It has been comfortable sleeping. Getting up is the only difficult part, maneuvering in the small space of the bunk and being careful not to disturb my bunkmate, Liz. Her schedule varies from mine, due to her bongo net responsibilities and CTD expertise. So far the sleeping arrangement has worked out well.

Words of the Day

Distribution: the local species and numbers of organisms in an area; Biomass: the combined mass of a sample of living organisms; Micronekton: free swimming small organisms; Zooplankton: small organisms that move with the current; Predation: the process of organisms eating other organisms to survive; Inclinometer: protractor designed to measure altitude from the horizon.

Questions of the Day

What organisms do you know of that change their feeding strategy at different times of the day?
In the local creek, river, or lake near you, are there both micronekton and zooplankton? How could you find out?

September 10, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 10, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 10, 2008

Weather Data from the Bridge
Latitude: 3736.6398 N Longitude: 12336.2210 W
Wind Direction: 220 (compass reading) SW
Wind Speed: 11.3 knots
Surface Temperature: 14.638

This moon jelly was captured with the mid-water net. Its bell was 35.5 cm wide. The purplish pattern represents the gonads, which the turtles love to eat.

Science and Technology Log

The mid-water net was just deployed. This is a new net for the research team to use. On the trip north, during the first part of this cruise, the last net became mangled during use. A new, larger net was obtained and the crew is working out how best to deploy it. After three tries, they seem to have determined the best way to lay it out, release it, and winch it back in. The David Starr Jordan is now heading over to the off shore area outside of Point Reyes, where the plan will be to deploy it for only one to two minutes.

The jellyfish there are usually so numerous that they will fill the net immediately. Leatherbacks eat jellyfish of many kinds, but they love the types in the Pelagiidae family. These are the types with long hanging arms, which the turtles snack on until they get up into the body cavity. The jellyfish are then eaten from the insides, with a soft-bodied bell left behind. The bell-shaped body of this family can be as large as 55 cm. The favorite of leatherback, so the one we will hope to find in abundance, is the Sea nettle, Chrysaora fuscescens. These are most numerous in August and September in specific locations off the California coast, so it can be anticipated that leatherbacks will also be found there. The predictability of this occurrence is the reason leatherbacks have evolved to travel the Pacific Ocean from Asia every year.

Unidentified songbird, hopping a ride aboard the Jordan.

The ship, David Starr Jordan, was built in 1965, so is among the oldest of the fleet of NOAA research ships. The age can be found in the cabinet design, the flooring material and little features. Never the less, it has been built for sustained trips at sea for up to 23 days in length. There is a steward on board who creates elaborate lunches and dinners daily. Last night’s dinner included Filet Mignon, shrimp in butter sauce, two soups, sautéed vegetables, and at least four other hot dishes. There is always a salad bar set up and 24-hour hot beverages, cereal, toast, ice cream, yogurts and fruit. Everyone eats well.

In the crew’s lounge, drawers of over 200 current films are stored, including new releases. They have been converted to 8 mm tape to accommodate the video system on board. There is also a small gym with a treadmill, stationary bicycle and bow-flex machine. A laundry room completes the ‘home’ environment. At least three showers are available. The ship has a system to desalinate water, which is a slow process, so water conservation is suggested. This means: wet yourself down, turn off the water, soap up and scrub, then turn the water on and rinse off. Repeat if necessary. There are no water police, but we all have an interest in enough water being available.

Although the food has looked great, I have found that until I get my ‘sea legs’ I need to stay away from most food. Yesterday evening, I discovered that the lunch and dinner I ate; did not look as good coming out as it did going down. Today is better, but I will stick to yogurt, oatmeal, and tea for a bit.

Animals Sighted Today
Sea nettle jellies Chrysaora fuscescens
Moon jellies Aurelia aurita
Egg yolk jellies Phacellophora camtschatica
Ocean sunfish Mole mole
Humpback whale Megapterea novaeangliae
Blue whale Balaenoptera musculus
Common murre Uria aalge
Black phoebe Sayornis nigricans
Red phalarope Phalaropus fulicaria
Buller’s shearwater Puffinus bulleri
Sooty shearwater Puffinus griseus
Brown pelican Pelecanus occidentalis
Brandt’s cormorant Phalacrocorax penicillatus
Dall’s porpoise Phocoenoides dalli

Questions of the Day

What type of data is considered ‘oceanographic’ data?
What types of organisms produce chlorophyll in the ocean?

September 10, 2008April 2, 2021

Mary Anne Pella-Donnelly, September 10, 2008

NOAA Teacher at Sea
Mary Anne Pella-Donnelly
Onboard NOAA Ship David Jordan Starr
September 8-22, 2008

Mission: Leatherback Use of Temperate Habitats (LUTH) Survey
Geographical Area: Pacific Ocean –San Francisco to San Diego
Date: September 10, 2008

Weather Data from the Bridge
Latitude: 3737.3158 N Longitude: 12337.1670 W
Wind Direction: 234 (compass reading) SW
Wind Speed: 9.7 knots
Surface Temperature: 14.638

Deck crew setting up the mid-water net to be deployed off the back deck.

Science and Technology Log

Two consistent methods of data collection on the survey include netting and collecting oceanographic data. Up to three times a day a mid-water net is carefully dropped off the back, and towed at the surface. The last two times the net has been pulled in one or two moon jellies have been caught. Each specimen is weighed and measured, then tossed back. Every evening, two hours after sunset, a bongo net is deployed off the side of the boat. With weights added, it is designed to drop as far as 300 m below the surface. Since there are two nets collecting, the scientists are able to retrieve and preserve the contents of one, to be analyzed for species composition later, and examine the second here on the boat. This is done two hours after sunset since many organisms come much closer to the surface after dark, when their predators are less likely to find them.

Another important tool that is used to collect oceanographic data is the CTD. This CTD has eight chambers and can collect samples from eight different water depths. It is carefully dropped down to 500 m (or more if needed), and then a chamber is opened at intervals determined by the scientist collecting the samples. Every waking hour the temperature of the ocean is sampled using a XBT “gun” that shoots out a 760 meter long copper wire. XBT stands for Expendable Bathy thermograph. The weighted wire is kept in the ocean until a stable reading is obtained. This gives an indication of the temperature gradient from the surface down to 760 meters in the immediate area.

Personal Log

Two Dall’s porpoise gliding next to the ship.

The first 24 hours were smooth sailing through overcast but calm seas. We have had two visits by common dolphins who have seen the boat, told their 4 or 5 best buddies, and come over to ‘ride the bow.’ They glide under the surface, leap up through the waves and glide some more. They are having a blast. The second time was less convenient for the research, since the mid-water net could not be deployed with marine mammals in the area. And the dolphins wouldn’t leave!! So deployments had to wait 45 minutes for the dolphins to get tired and go find another playground. Yesterday a net drop deployment was almost postponed again, for a large pod of white-sided dolphins spotted behind the boat. They swam perpendicular to the ship however, and stayed a good distance away. It was estimated that there were

180 of them! That was it for yesterday. The first afternoon, we saw one humpback whale spouting and then it showed its fluke as it went under. Another four were seen in the distance. We are all looking forward to more sightings. The primary job that I and another ship visitor have, is to act as observers up on the flying bridge, one half hour before the net is scheduled to be dropped, and stay until the net is retrieved. Because of the Marine Mammal Protection Act, all activity that could put these animals at risk must not be done if any marine mammals are in the area. So I sit up on the highest deck, and watch. There is a walkie-talkie next to me, a computer set to log any sightings of interest, including jellies that float by and high-powered binoculars to scan the surface. With snacks and beverages always handy in the mess hall, I can be quite cozy.

Animals Seen So Far
Humpback whale Megapterea novaeangliae
Common dolphin Delphinus delphis
Pacific white-sided dolphin Lagenorhynchus olbiquidens
California Sea lion Zalophus californianus
Moon jelly Aurelia labiata
Egg yolk jelly Phacellophora camtschatica
Sooty shearwater Puffinus griseus
Buller’s Shearwater Puffinus bulleri

We also have a few lost, confused song birds on board-who are happily eating up insects for us Western tanager Piranga ludoviciana Townsend’s warbler Dendroica townsendi

Questions of the Day

What is the purpose of scientific names in international research?
To become a marine scientist, what fields of science are required as background?

September 2, 2008April 5, 2021

Alex Eilers, September 1, 2008

NOAA Teacher at Sea
Alex Eilers
Onboard NOAA Ship David Starr Jordan
August 21 – September 5, 2008

Teacher at Sea Alex Eilers releasing an XBT

Mission: Leatherback Sea Turtle Research
Geographical area of cruise: California
Date: September 1, 2008

Science Log

The second week has been absolutely fabulous as we found a leatherback – in fact we found three!!! This week has been all about the turtle: from identifying the biotic and abiotic conditions that define leatherback turtle habitat and foraging grounds, to tracking and tagging – we’ve done it all.

• Abiotic oceanographic data provided by scientific instruments such as XBTs (expendable bathythermographs), CTD (conductivity, temperature and depth), and water samples containing nutrient data to characterize the abiotic foraging habitats of the leatherback turtle.

• Net tow samples characterized the biotic conditions such as the jellyfish species prevalent in the turtle diet: moon jellies, sea nettles, and egg yolk jellies.

Egg yolk jelly with pipefish and larval rex sole

Tracking the turtles via air surveillance and handheld antenna — Tracking the turtles via handheld antenna

Aerial survellance — Aerial surveillance

August 31, 2008April 5, 2021

Alex Eilers, August 31, 2008

NOAA Teacher at Sea
Alex Eilers
Onboard NOAA Ship David Starr Jordan
August 21 – September 5, 2008

Mission: Leatherback Sea Turtle Research
Geographical area of cruise: California
Date: August 31, 2008

Alex putting glow sticks on branch line.

August 29 – Longline fishing for swordfish

Today’s major objective was to catch swordfish for tagging using a fishing method called longlining. Longline fishing uses one main line held just below the water’s surface with several buoys. Attached to the main line are several smaller branch lines with hooks and bait. The branch lines extent 42 feet or 7 fathoms into the ocean.

Preparing to launch the longline is quite a sight and it requires a number of individuals, each working in unison. There is a person who baits the hooks on the branch line then hooks it to the main line, another person attaches a glow stick (used to attract the swordfish), and a third person attaches the buoy to the main line. There are also a number of people working behind the scenes sorting lines and working the winch. After all the branch lines are hooked to the main line, the line soaks in the water for several hours – in hopes that a swordfish will take the bait.

Reeling in the line took about two hours because the line was 4 miles long and held over 200 hooks. I thought this was an extremely long line but was told that commercial fishing vessels use between 40 to 60 miles of line with thousands of branch lines. Wow!

Unfortunately, we were unable to tag any swordfish but hope to try again on Labor Day. What an incredible experience today has been.

August 30 and 31 – Rock’n and Roll’n

Whoa, Whoa… is about all you heard me say over the past two days. We’re going through a rough patch today – high winds and swells up to 5 or 7 meters – between 15 and 20 feet. We sure were glad the scientific equipment was secured during the first few days – because everything that wasn’t tied down went flying – including chairs, drinks and the crew. The closest thing I could come to describing this experience would be like riding a non-stop Disney ride. The inclinometer reading (an instrument that is use to detect the degrees a boat rolls) recorded a maximum tilt of about 36 degrees. To put thing into perspective, I am now typing with one hand and holding the table with the other. Unfortunately, many of the science projects were cancelled due to high seas. We hope to be in the calmer waters of Monterey Bay area tomorrow.

August 27, 2008April 5, 2021

Alex Eilers, August 27, 2008

NOAA Teacher at Sea
Alex Eilers
Onboard NOAA Ship David Starr Jordan
August 21 – September 5, 2008

Mission: Leatherback Sea Turtle Research
Geographical area of cruise: California
Date: August 27, 2008

Everyone! Here’s the latest from my adventures at sea.

Today the crew was busy testing equipment. We tested both long-line fishing gear and box trawl netting! Both

tests were successful and we are looking forward to the real thing – more to come on this subject later. The picture below shows Scott Benson holding the box trawl net “catch.” Although it looks like group of eggs, they are actually members of the jellyfish family know as ctenophores or “comb jellies.”

We had a successful observation session today. I’ll introduce you to some of the “stars” of the day.

Common Dolphins were everywhere. We saw over 100 riding the waves on the bow of our boat. They move with great speed – especially when you are trying to take a picture of them.

Risso’s Dolphins – This is an unusual looking dolphin with a rounded head – unlike the traditional dolphin we all know. These creatures have numerous scratches and scars over their body from other Risso’s and from the squid they eat. They are gray when born and gradually become white with age.

Fin Whales – OK – I must admit – We didn’t actually see the Fin Whale but we did see the whale spouts from the three that we spotted.

Jelly Fish – We were excited to see so many Jellies – a favorite food of the Leatherback. Most looked like “Moon Jellies” but without catching them we cannot be sure of the type since there are many species.

To Do… Research one or more of the animals highlighted above.

August 24, 2008April 5, 2021

Alex Eilers, August 24, 2008

NOAA Teacher at Sea
Alex Eilers
Onboard NOAA Ship David Starr Jordan
August 21 – September 5, 2008

In the picture, the “Big Eyes” are covered and on the left side of the picture, the antennas are directly above me.

Mission: Leatherback Sea Turtle Research
Geographical area of cruise: California
Date: August 24, 2008

Today we were in assembly mode and I spent the majority of my time on the flying bridge (top deck). With the help of several scientists, we cleaned and replaced the viewing seats, installed the “Big Eyes” – (the largest pair of binoculars I’ve ever seen), and assembled and tested the Turtle tracking antennas. The “Big Eyes” will be used to help track and identify marine mammals, leatherbacks and birds near the boat. This is especially important prior to and during the times scientists have equipment in the water so we don’t catch or injure these animals. The receiver will be used to track the Leatherback Sea Turtles who have a transmitter attached to their carapace. The good news is we are receiving reports that there is a Leatherback approximately 110 miles off the coast of Monterey – the bad news is he may not be there when we arrive.

Safety training During our first true “day at sea” we had two practice safety drills; a fire in the galley (kitchen) and an abandon ship. The crew handled both drills quickly and efficiently. The abandon ship drill was exciting. When the bell rang, everyone was responsible for his or her own billet (job duty). My billet required me to grab my life preserver and survival suit and muster to the O1 deck (report to an area for role call).

Training to be a VO – visual observer We started the day on the flying bridge. Karin Forney, marine mammal researcher, trained us on how to be a marine animal visual observer or VO for short. During the first observing session, we only saw a few animals – sea lions and various birds.

I’m getting fairly good at spotting kelp beds (seaweed), however, the scientists are not interested in them, so I still need more practice identifying marine mammals.

By the afternoon, we started to see more marine life. A large pod of common dolphins swam playfully near the ship. This was a beautiful sight to see but not ideal for net testing. We waited 30 minutes without a mammal sighting then successfully tested the nets. As the scientists were pulling the nets aboard we spotted another smaller pod of common dolphins, some California sea lions and a small mola mola (sun fish). All in all it was a good day!

August 23, 2008April 5, 2021

Patricia Donahue, August 23, 2008

NOAA Teacher at Sea
Patricia Donahue
Onboard NOAA Ship Rainier
August 19-23, 2008

Mission: Hydrographic Survey of Bear Cove, AK
Geographical Area: Kachemak Bay, Alaska, 59.43.7 N, 151.02.9 W
Date: August 23, 2008

Weather on the Bridge at 14:00
Overcast (8/8)
Visibility 11 to 27 nautical miles
Winds light and variable
Seas calm at 10˚C
Air pressure 1000.5 millibars and rising slightly
Dry Bulb 14.4˚C, Wet Bulb 11.1˚C

Science and Technology Log

Getting a ship ready for inspection or for showing it off to the public is a busy process. All day seamen and women have been scrubbing – sometimes literally on their hands and knees – decorating, and setting up displays to make Rainier look her best. Their pride in the ship and in their work shows. The Fairweather, pictured above, is also here. She pulled in this morning along the same dock. It was amazing to watch her move toward the dock sideways! Once docked stern to stern, both ships were decorated with bunting made from signal flags. There is a flag for each letter of the alphabet and for numbers as well. A ship can identify itself by showing the signal flags for its call sign. Rainier’s call sign is WTEF. You can use this chart to draw Rainier’s call sign.

Every member of the crew was on hand for the open house.The Fairweather crew signed people in and checked their identification. Altogether, nearly 90 people toured the ships during the 2 hour open house. There were similar stations on each ship’s tour. As visitors arrived, they were taken in small groups to the bridge. After learning about the navigation and communication systems, they moved on to the Plot Room where many displays had been set up, including some marvelous computer graphics. The next tour stop was the fantail to see the small boats, then on to the diving lockers. Everyone had a chance to see a state room and finally the ward room where many brochures, books, and pamphlets were available for taking. NOAA’s Teacher At Sea book was a very popular choice! One of the visitors was a home school teacher from Texas. I think she took 2 copies! Even seasoned seamen on the tour each took a copy of the book.

Rainier crewmembers get ready for the tours.

By taking the tour, I learned a few more things about the Rainier. The bridge is equipped with an infrared camera for night vision. When running at night, all of the portholes must be closed so that crewmembers on the bridge can see into the dark without light interference. Only a few “running lights” are kept on so that other vessels can see the Rainier. Another thing I learned has to do with the windows on the bridge. All but one has ordinary windshield wipers but one pane is also equipped with a clear view screen that provides a field of vision in case of heavy rain, seas, or snow. The center of the window spins very quickly like a centrifuge to dislodge water, snow, or ice. This allows the helmsman to see outside into a storm. Our guide told us that if this feature is in use, you know the weather is very bad! Lastly, I learned that the surveyors sometimes take samples of the ocean floor. They collect a small amount of material from the sea floor surface only. I was reminded of another ship called the JOIDES Resolution that drills deep into the Earth’s crust and brings up complete cores of subsurface sediment and rock. For more information about his ship, visit here.

Computer graphics like this were displayed in the the ship.

A crewmember of the Rainier gives children a tour of the ship.

Personal Log

Visitors began the tour by walking up the ship’s gangway.

There are two aspects of life aboard the Rainier that I was impressed by. One is the conscientiousness of the crew regarding recycling. Labeled containers are available to separate the various waste streams and everyone complies. When in port, the separated recyclables are put ashore for pick up. While this may seem a small matter, it accentuates NOAA’s commitment to stewardship of the natural environment. The other item I noticed was the frequent hand washing or use of antibacterial hand cleaners. With so many people in such close quarters, stopping the spread of diseases is important. Every crewmember did their part to keep their germs to themselves. I wish my students would do the same!

I had a little extra time today so I took a walk along the famous Homer Spit and stopped at the Seafarer’s Memorial. People had brought shells, driftwood and kelp to decorate the statue. The stones of the floor were engraved with the names of sailors lost at sea. People had taped flowers to certain stones. The place had a quiet dignity.

Animals Seen Today

There were fewer gulls at the dock than when the ship was last here. The nesting season is nearly over. Almost all of the young have fledged. The few that remain are grown, and able but unwilling to fly. An exasperated parent stood over each of these few, guarding but refusing to feed their recalcitrant offspring. Having a son that age, I understood how these birds felt!

Making Connections

Representatives of the Kasitsna Bay Laboratory of the Center for Coastal Fisheries and Habitat Research were on hand for the open house. They and other interested parties, such as the University of Alaska and the state’s fisheries and wildlife management authorities, are very excited about NOAA’s survey work. The data NOAA collects will be beneficial for identifying crab habitat and managing these and other resources to ensure their sustainability.

At the end of the tour, visitors were able to take home books, brochures, and pamphlets.

A NOAA employee from Kasitsna Bay Laboratory

August 23, 2008April 5, 2021

Rebecca Bell, August 23, 2008

NOAA Teacher at Sea
Rebecca Bell
Onboard NOAA Ship Delaware II
August 14-28, 2008

Mission: Ecosystems Monitoring Survey
Geographical Area: North Atlantic
Date: August 23, 2008

Alison, Shrinky Cup Project Director, with the cups before being sent beneath the water. — Alison, Shrinky Cup Project Director, with the cups before being sent under.

Weather Data from the Bridge
Time: 1919(GMT)
Latitude: 4219.5N Longitude: 6812.5 W
Air Temp ⁰C: 20.7
Sea Water Temp ⁰C: 19.6

Science and Technology Log

The Shrinky Cup Caper

A trip to sea is not complete without the classic experiment on ocean depth and pressure— Styrofoam cup shrinking. Styrofoam cups are decorated with markers, and then lowered in a bag attached to the cable during a vertical cast. In our experiments, pressure is measured in decibars (dbar). This means that 1 dbar equals about 1 meter of depth. So 100 dbars = 100 meters; 1000 dbars =1000 meters. For every 10m (33ft) of water depth, the pressure increases by about 15 pounds per square inch (psi). At depth, pressure from the overlying ocean water becomes very high, but water is only slightly compressible. At a depth of 4,000 meters, water decreases in volume only by 1.8 percent. Although the high pressure at depth has only a slight effect on the water, it has a much greater effect on easily compressible materials such as Styrofoam.

Attaching the bag of cups to cable Over they go! — Attaching the cups

Styrofoam has air in it. As the cups go down, pressure forces out the air. See the results of the experiment for yourself. The depth of the cast was 200 meters or about 600 feet. (You can now calculate the total lbs of pressure on the cups). Addendum: Alison discovered that putting one of the shrunken cups down a second time resulted in an even smaller cup. The cups were sent to 200 meters again. Below right is a photo of the result of reshrinking the cup. Apparently, time has something to do with the final size as well. Resources: NOAA Ocean Explorer Web site – Explorations; Submarine Ring of Fire. AMNH Explore the Deep Oceans Lessons.

Personal Log

There is a noticeable difference in the amount of plankton we pull in at different depths and temperatures. I can fairly well predict what we will net based on the depth and temperature at a sample site. I’ve also noticed that the presence of sea birds means to start looking for whales and dolphins. I assume that where there is a lot of plankton (food) there are more fish and other lunch menu items for birds and dolphins. A high population of plankton means we are more likely to see more kinds of larger animals.

Animals Seen Today

Salps
Krill
Amphipods
Copepods
Ctenophores
Chaetognaths (arrow worms)
Fish larvae
Atlantic White-sided Dolphins
Terns
Minke whales
Pilot whales
Mola mola (4)

The results of what happened to the cups at a depth of 200 meters. The white cups are the original size.

Left, a cup shrunk 2 times; center 1 time; and right, the original size — Left, a cup shrunk 2 times; center 1 time; and right,
the original size

August 22, 2008April 5, 2021

Patricia Donahue, August 22, 2008

NOAA Teacher at Sea
Patricia Donahue
Onboard NOAA Ship Rainier
August 19-23, 2008

Mission: Hydrographic Survey of Bear Cove, AK
Geographical Area: Kachemak Bay, Alaska, 59.43.7 N, 151.02.9 W
Date: August 22, 2008

One of the Rainier’s small boats, also called a launch